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PSM Program Review Checklist
Use this checklist to help determine employer compliance with the Process Safety Management Standard issued by the Occupational Safety and Health Administration. Please note that the checklist does not include all of the standard’s requirements and does not reflect all OSHAletters of interpretation or compliance directives in particular situations.
There are 3 elements to a review of a PSM program:
1. Documentationreview – examination of the documentation of the programs required by the standard. 2. Field Inspection & Verification – examination of the physical covered process; its equipment, piping,
instrumentation, procedures, and operation.
3. Interviews – discussions with employees and contractors to determine if the implemented program matches the program outlined in the documentation.
In order to gather the information needed to audit a PSM program the following questions need to be asked for each PSM program element
Who What When Where Why How
Who – Who is responsible for developing and implementing each of the program elements? What – What are the requirements and contents of each program element?
When – When are the required actions for each element completed and when were they required to be completed?
Where – Where have actions been implemented or changed?
Why – Why have the implementation decisions and priorities been made as recorded in the documentation? How – How is the program implemented and how is the program’s effectiveness evaluated and improved? An essential part of verifying program implementation is to audit the flow of information and activities among the elements. When information in one element is changed or when action takes place in one element that affects other elements, an auditor/reviewer should examine a sample of the related elements to see if the appropriate changes and followup actions have taken place.
The following example demonstrates the interrelationship among the elements:
During a routine inspection of equipment (Mechanical Integrity), the maintenance worker discovers a valve that no longer meets the applicable code and must be changed. Because the type of valve is no longer made, a different type of valve must be selected and installed (Management of Change). The type of valve selected may mandate different steps for the operators (Operating Procedures) who will require training and verification in the new procedures (Training). The rationale for selecting the type of valve must be made available for review by employees and their representatives (Employee Participation).
When the new valve is installed by the supplier (Contractors), a qualified and safe contractor must be selected to perform the work (Contractor Management). The work will involve shutting down part of the process (Pre-startup Safety Review) as well as brazing some of the lines (Safe Work Practices - Hot Work Permit). The employer must review the response plan (Emergency Planning) to ensure that procedures are adequate for the installation hazards. Although Management of Change provisions cover interim changes, after the new valve is in place the Process Safety Information will have to be updated before the (Process Hazard Analysis) is updated or revalidated, to account for potential hazards associated with the new equipment. Also, inspection and maintenance procedures and training will need to be updated (Mechanical Integrity).
In summary, 12 PSM elements can be affected by changing one valve. A reviewer/inspector/auditor/compliance officer would check a representative number of these 11 elements to confirm that the required follow-up activities have been implemented for the new valve.
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Application of PSM Standard to Facility - 1910.119(a) Does the workplace have any of the following:
A process which involves a chemical at or above the specified threshold quantities listed in Appendix A of
the PSM Standard (attached to checklist); or
A process which involves a flammable liquid or gas [as defined in 1910.1200(c)] on site in one location, in a
quantity of 10,000 pounds (4535.9 kg) or more. Exemptions:
A threshold quantity of flammable liquids if it is stored in atmospheric tanks or transferred without the
benefit of chilling or refrigeration
Hydrocarbon fuels used solely for workplace consumption as a fuel (e.g., propane used for comfort
heating or gasoline for vehicle refueling.) These fuels cannot be part of a process containing other highly hazardous chemicals covered by the PSM standard.
Retail facilities.
Oil or gas well drilling or servicing operations.
Normally unoccupied remote facilities.
Note: for determining coverage by the PSM standard, the quantity of flammable liquids stored in
atmospheric tanks may be excluded from the quantity in the covered process pursuant to the “Meer” Decision.
Important interpretation: June 11, 2007 – OSHA defines “on-site in one location” for PSM to mean that the standard applies when a threshold quantity of highly hazardous chemical (HHC) exists within an area under the control of an employer or group of affiliated employers. It also applies to any group of vessels that are interconnected, or in separate vessels that are close enough in proximity that the HHC could be involved in a potential catastrophic release.
** IF THE WORKPLACE HAS ANY OF THESE OPERATIONS OR PROCESSES, IT MUST COMPLY WITH THE PSM STANDARD. **
Examples of industries that may have highly hazardous chemicals and processes covered by the PSM standard:
Industrial production of organics and inorganic
materials
Paints
Pharmaceuticals
Adhesives
Sealants and Fibers
Petrochemical facilities
Paper Mills
Food Processing with Anhydrous Ammonia over
the TQ
Conversion Example
Gallons to lbs conversion = gallons x 8.33 x specific gravity of the liquid = lbs of liquid Example: Weight of 10,000 gallons of gasoline = 10,000 x 8.33 x 0.739 = 61,559 lbs
YES NO Employee Participation – 1910.119(c)(1)
Has the employer developed a written plan of action for implementation of employee participation?
YES NO Employee Participation – 1910.119(c)(2)
Has the employer consulted with employees and their representatives on the conduct and development of process hazard analyses and on the development of all other elements of the PSM standard?
YES NO Employee Participation – 1910.119(c)(3)
Do employees and their representatives have access to process hazard analyses and all other information required by the PSM standard?
YES NO Hazard Information Collection – 1910.119(d)(1)
Has the employer collected information pertaining to the hazards of the process?
Toxicity
PELs
Physical data
Reactivity
Corrosivity
Thermal & chemical stability
Hazards of mixing chemicals
MSDSs
YES NO Technology of the Process Information Collection – 1910.119(d)(2)(i)(A)
Does the employer have block diagrams or simplified process flow diagrams for each covered process?
YES NO Technology of the Process Information Collection – 1910.119(d)(2)(i)(B-D) Does the employer have information on the technology of the covered process for the following:
Process chemistry – 1910.119(d)(2)(i)(B).
Maximum intended inventory – 1910.119(d)(2)(i)(C).
Safe upper and lower limits for: temperature, pressures, flows, levels, compositions
or other pertinent metrics for the process – 1910.119(d)(2)(i)(D).
YES NO Technology of the Process Information Collection – 1910.119(d)(2)(i)(E) Has the employer performed and documented an evaluation of the consequences of deviations in the covered process, including those affecting the health and safety of employees?
YES NO Equipment of the Process Information Collection – 1910.119(d)(3)(i)(A-H) Does the employer have information on the equipment of the covered process for the following:
Materials of construction – 1910.119(d)(3)(i)(A).
Piping and instrument diagrams (P&IDs) – 1910.119(d)(3)(i)(B).
Electrical classification – 1910.119(d)(3)(i)(C).
Relief system design and design basis – 1910.119(d)(3)(i)(D).
Ventilation system design – 1910.119(d)(3)(i)(E).
Design codes or standards used – 1910.119(d)(3)(i)(F).
Material and energy balances for processes – 1910.119(d)(3)(i)(G).
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YES NO Equipment of the Process Information Collection – 1910.119(d)(3)(i)(A-H)
Has the PSM documentation including all elements above been field verified and compared to the actual equipment and components in the covered process?
YES NO Process Hazard Analysis – 1910.119(e)(1)
Has the employer performed an initial process hazard analysis on the covered processes?
YES NO Process Hazard Analysis – 1910.119(e)(2)(i-vii)
Has the employer used one or more of the following methodologies to perform the process hazard analysis (PHA)?
What if – 1910.119(e)(2)(i).
Checklist – 1910.119(e)(2)(ii).
What if/Checklist – 1910.119(e)(2)(iii).
Hazard and Operability Study (HAZOP) – 1910.119(e)(2)(iv).
Failure mode and effects analysis (FEMA) – 1910.119(e)(2)(v).
Fault tree analysis – 1910.119(e)(2)(vi).
An appropriate equivalent methodology – 1910.119(e)(2)(vii).
YES NO Process Hazard Analysis – 1910.119(e)(3)(i-vii) Does the PHA(s) address the following?
Hazards of the process – 1910.119(e)(3)(i).
Equipment in the process – 1910.119(e)(3)(i).
Identification of previous incidents – 1910.119(e)(3)(ii).
Engineering and administrative controls – 1910.119(e)(3)(iii).
Consequences of failure for engineering or administrative controls; including
consequences of deviation and steps required to correct or avoid deviation – 1910.119(e)(3)(iv).
Facility siting – 1910.119(e)(3)(v).
Human factors – 1910.119(e)(3)(vi).
A qualitative evaluation of safety and health effects of failure on employees in the
workplace – 1910.119(e)(3)(vii).
YES NO Process Hazard Analysis – 1910.119(e)(4)
Was the PHA(s) performed by a team that had the following?
Expertise in engineering and process operations.
At least one employee with experience and knowledge specific to the covered
process.
With one member of the team knowledgeable in the specific evaluation
methodology used to perform the PHA.
YES NO Process Hazard Analysis – 1910.119(e)(5)
Does the employer have a system to promptly address PHA findings and recommendations?
Does the system address findings and recommendations in a timely manner?
Are the resolutions documented?
Document actions taken?
Is there a written schedule for completion of recommended actions?
Has the actions taken or scheduled for resolution of recommendations been
communicated to employees, contractors or other persons possible impacted by the recommendations or actions?
YES NO Process Hazard Analysis – 1910.119(e)(6)
Have PHAs been updated and revalidated at least every five years?
YES NO Process Hazard Analysis – 1910.119(e)(7)
Has the employer retained all documentation for PHAs, updates, revalidations, recommendations, and resolutions of recommendations?
YES NO Operating Procedures – 1910.119(f)(1)
Has the employer developed and implemented written safe operating procedures for each covered process; addressing the steps for each operating phase, the operational limits, safety and health considerations, and safety systems and their function?
Steps for each operating phase:
Initial startup – 1910.119(f)(1)(i)(A).
Normal operations – 1910.119(f)(1)(i)(B).
Temporary operations – 1910.119(f)(1)(i)(C).
Emergency shutdown including the conditions under which emergency shutdown is
required, and assignment of responsibility to qualified operators to ensure timely and safe shutdown – 1910.119(f)(1)(i)(D).
Emergency operations – 1910.119(f)(1)(i)(E).
Normal shutdown – 1910.119(f)(1)(i)(F).
Startup after turnaround or emergency shutdown – 1910.119(f)(1)(i)(G).
Operating limits:
Consequences of deviation – 1910.119(f)(1)(ii)(A).
Steps required to avoid or correct deviation – 1910.119(f)(1)(ii)(B).
Safety and health considerations:
Properties and hazards of chemicals present in the covered process –
1910.119(f)(1)(iii)(A).
Precautions required to prevent exposure; including engineering and administrative
controls, and PPE – 1910.119(f)(1)(iii)(B).
Control measure to be taken if physical or airborne exposure occurs –
1910.119(f)(1)(iii)(C).
Quality control of raw materials and control of hazardous chemical inventory –
1910.119(f)(1)(iii)(D).
Any special or unique hazards (like forklifts hitting ammonia refrigeration pipes) –
1910.119(f)(1)(iii)(E).
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YES NO Employee Training – 1910.119(g)(1)
Has the employer trained each employee involved in operating a covered process before the employee is involved in operating the process?
PSM training programs MUST be developed for:
Affected employees – Those not directly involved in the process operation but with
jobs at the facility with a covered process.
Authorized employees – Those directly involved in the process operation.
Contractors who may perform work on a covered process.
Vendors/Visitors who may visit the facility and may potentially be exposed to the
covered process – Primarily in emergency evacuation procedures and PPE requirements (if necessary).
Training subjects should include at least the following:
Lock-out/Tag-out
Hot work
Line & equipment opening
Confined space entry (if applicable)
Emergency response
Operating procedures
Management of Change
Other Training Subjects May be Required for Authorized Employees and Contractors
YES NO Employee Training – 1910.119(g)(2)
Has refresher training been provided for employees involved in operating a covered process at least every three years or as needed?
YES NO Employee Training – 1910.119(g)(3)
Has the employer documented all training, ascertaining that employees have received and understood the training? Documentation should include the following:
Identity of employee.
Date of training.
Means used to verify employee understanding of the training (test, interview, etc.)
YES NO Contractor Management – 1910.119(h)(2)(i)
When selecting a contractor, has the employer obtained and evaluated information regarding the contractor’s safety and health performance and programs?
YES NO Contractor Management – 1910.119(h)(2)(ii)
Has the employer informed contract employer of the known potential fire, explosion or toxic release hazards related to the contractor’s work and process?
YES NO Contractor Management – 1910.119(h)(2)(iii)
Has the employer explained to contractor employer the applicable provisions of the emergency action plan?
Has the employer developed and implemented safe work practices to control the entrance, presence and exiting of contractors in covered process areas?
YES NO Contractor Management – 1910.119(h)(2)(v)
Has the employer periodically evaluated the performance of all contractors in fulfilling their obligations in regards to training and related documentation of for contractor employees?
YES NO Contractor Management – 1910.119(h)(2)(vi)
Has the employer maintained an illness and injury log (OSHA form 300) for work performed by contract employees in the covered process area?
YES NO Contractor Management – 1910.119(h)(3)(i-iv) Has the contractor employer done the following:
Trained each contractor employee is trained in the work practices necessary to safely
perform the job.
Instructed each contractor employee in the known potential fire, explosion or toxic
release hazards related to the job and process.
Document that each contractor employee has received and understood the training
required, and the documentation includes the identity of the employee, date of training, and means used to verify the contract employee understood the training.
Ensure that contractor employees follow safety rules of the facility.
YES NO Contractor Management – 1910.119(h)(2)(v)
Has the contractor notified the employer of unique hazards presented by the contractor employer’s work in the covered process area?
YES NO Pre-Startup Safety Review – 1910.119(i)
Did the employer perform a pre-startup review for all new facilities or modified facilities that are modified enough to require change to the process safety information?
YES NO Mechanical Integrity of Process Equipment – 1910.119(j)(2)
Does the employer have written procedures to maintain the on-going integrity of the following process equipment:
Pressure vessels and storage tanks.
Piping systems (including piping components such as valves.)
Relief and vent systems and devices.
Emergency shutdown systems.
Controls (including monitoring devices and sensors, alarms, and interlocks.)
Pumps.
YES NO Mechanical Integrity of Process Equipment – 1910.119(j)(3)
Does the employer have documentation of training that each employee involved in the maintaining of the on-going integrity of covered process equipment has been informed of the hazards of the process and the procedures applicable to the employee’s job task and how to perform the job task in a safe manner?
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Does the employer have documentation that the employer has performed inspections and tests on the covered process equipment following generally accepted engineering practices or manufacturer’s recommendations on a frequency that is according to generally accepted engineering practices, manufacturer’s recommendations or more frequently if determined by prior experience? The documentation should include: date, name of person performing inspection or test, description of inspection or test, and results of the inspection or test.
YES NO Mechanical Integrity of Process Equipment – 1910.119(j)(5)
Has the employer corrected deficiencies in integrity before further use or in a safe and timely manner when necessary means are taken to assure safe operation?
YES NO Mechanical Integrity of Process Equipment – 1910.119(j)(6)
Quality assurance – Has the employer assured that fabricated equipment is suitable for the process application (applicable codes), has been inspected and checked for proper
installation consistent with design specification and manufacturer’s recommendations, and all maintenance materials and spare parts are also suitable for the process application?
YES NO Hot Work – 1910.119(k)
Has the employer issued a hot work permit for hot work operations conducted on or near a covered process?
YES NO Management of Change – 1910.119(l)(1-2)
Does the employer have written procedures to manage change in the covered process(es)? Procedures should cover the following:
Technical basis for proposed change.
Impact of change on safety and health.
Modification to operating procedures.
Necessary time period for the change.
Authorization requirements for the proposed change.
YES NO Management of Change – 1910.119(l)(3)
Have affected employees and contractors been informed and trained on change in the covered process prior to start-up of the process or affected portion of the process?
YES NO Management of Change – 1910.119(l)(4-5)
Has the employer updated the following procedures, practices and/or documentation affected by the change in the process?
Process information.
Operation procedures or practices.
Inspection and testing procedures.
PHAs.
Flow charts, P&IDs, equipment #s, mechanical integrity certificates, etc.
YES NO Incident Investigation – 1910.119(m)(1)
Has the employer investigated each incident, which resulted in, or could reasonably have resulted in, a catastrophic release of highly hazardous chemical in the workplace?
Has an incident investigation been initiated as promptly as possible, but not later than 48 hours following the incident?
YES NO Incident Investigation – 1910.119(m)(3)
Did the investigation team(s) consist of at least one person knowledgeable in the process involved, including a contract employee if the incident involved work of the contractor, and other persons with appropriate knowledge and experience?
YES NO Incident Investigation – 1910.119(m)(4)
Did the investigation team issue a report at the conclusion of the investigation which included at a minimum the following:
Date of incident.
Date investigation begun.
A description of the incident.
The factors that contributed to the incident.
Any recommendations resulting from the investigation.
YES NO Incident Investigation – 1910.119(m)(5)
Has the employer established a system to promptly address and resolve incident findings and recommendations, with documentation of resolutions and corrective actions?
YES NO Incident Investigation – 1910.119(m)(6)
Has the employer reviewed all incident reports with affected personnel whose job tasks are relevant to the incident findings, including contract employees?
YES NO Incident Investigation – 1910.119(m)(7)
Has the employer retained all incident reports for at least 5 years?
YES NO Emergency Planning and Response – 1910.119(n)
Has the employer developed and implemented an emergency plan for the entire plant in accordance with the provisions of 29 CFR 1910.38?
YES NO Compliance Audit – 1910.119(o)(1-3)
Has the employer performed an audit of the PSM program to certify they have evaluated compliance with the provisions of the PSM standard at least every 3 years conducted by at least one person knowledgeable in the process, and a report issued?
YES NO Compliance Audit – 1910.119(o)(4)
Has the employer promptly determined and documented appropriate response to each of the findings?
YES NO Compliance Audit – 1910.119(o)(5)
Has the employer retained the two most recent compliance audit reports?
YES NO Trade Secrets – 1910.119(p)
Has the employer made all information necessary to comply with the PSM standard available to those persons responsible for compiling the process safety information?
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Have employee and their designated representatives had access to trade secret(s)
information contained within process hazard analysis and other documents required to be developed by this standard?
Appendix A – 1910.119 List of Highly Hazardous Chemicals, Toxics and Reactives CHEMICAL NAME CAS* TQ**
Acetaldehyde 75-07-0 2500 Acrolein (2-Popenal) 107-02-8 150 Acrylyl Chlorde 814-68-6 250 Allyl Chlorid 107-05-1 1000 Allylamine 107-11-9 1000 Alkylaluminum Varies 5000 Ammonia, Anhydrous 7664-41-7 10000
Ammonia solutions (greater than 44% ammonia by weight) 7664-41-7 15000
Ammonium Perchlorate 7790-98-9 7500
Ammonium Permanganate 7787-36-2 7500
Arsine (also called Arsenic Hydride) 7784-42-1 100
Bis(Chloromethyl) Ether 542-88-1 100 Boron Trichloride 10294-34-5 2500 Boron Trifluoride 7637-07-2 250 Bromine 7726-95-6 1500 Bromine Chloride 13863-41-7 1500 Bromine Pentafluoride 7789-30-2 2500 Bromine Trifluoride 7787-71-5 15000
3-Bromopropyne (also called Propargyl Bromide) 106-96-7 100 Butyl Hydroperoxide (Tertiary) 75-91-2 5000 Butyl Perbenzoate (Tertiary) 614-45-9 7500 Carbonyl Chloride (see Phosgene) 75-44-5 100
Carbonyl Fluoride 353-50-4 2500
Cellulose Nitrate (concentrationgreater than 12.6% nitrogen) 9004-70-0 2500
Chlorine 7782-50-5 1500
Chlorine Dioxide 10049-04-4 1000
Chlorine Pentrafluoride 13637-63-3 1000
Chlorine Trifluoride 7790-91-2 1000
Chlorodiethylaluminum (also called Diethylaluminum Chloride)
96-10-6 5000
1-Chloro-2,4-Dinitrobenzene 97-00-7 5000
Chloromethyl Methyl Ether 107-30-2 500
Chloropicrin 76-06-2 500
Chloropicrin and Methyl Bromide mixture None 1500 Chloropicrin and Methyl Chloride mixture None 1500
Cumene Hydroperoxide 80-15-9 5000
Cyanogen 460-19-5 2500
Cyanogen Chloride 506-77-4 500
Cyanuric Fluoride 675-14-9 100
Diacetyl Peroxide (concentration greater than 70%) 110-22-5 5000
Diazomethane 334-88-3 500
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CHEMICAL NAME CAS* TQ**
Diborane 19287-45-7 100
Dibutyl Peroxide (Tertiary) 110-05-4 5000
Dichloro Acetylene 7572-29-4 250 Dichlorosilane 4109-96-0 2500 Diethylzinc 557-20-0 10000 Diisopropyl Peroxydicarbonate 105-64-6 7500 Dilauroyl Peroxide 105-74-8 7500 Dimethyldichlorosilane 75-78-5 1000 Dimethylhydrazine, 1,1- 57-14-7 1000 Dimethylamine, Anhydrous 124-40-3 2500 2,4-Dinitroaniline 97-02-9 5000
Ethyl Methyl Ketone Peroxide (also Methyl Ethyl Ketone Peroxide; concentration greater than 60%)
1338-23-4 5000 Ethyl Nitrite 109-95-5 5000 Ethylamine 75-04-7 7500 Ethylene Fluorohydrin 371-62-0 100 Ethylene Oxide 75-21-8 5000 Ethyleneimine 151-56-4 1000 Fluorine 7782-41-4 1000 Formaldehyde (Formalin) 50-00-0 1000 Furan 110-00-9 500 Hexafluoroacetone 684-16-2 5000
Hydrochloric Acid, Anhydrous 7647-01-0 5000
Hydrofluoric Acid, Anhydrous 7664-39-3 1000
Hydrogen Bromide 10035-10-6 5000
Hydrogen Chloride 7647-01-0 5000
Hydrogen Cyanide, Anhydrous 74-90-8 1000
Hydrogen Fluoride 7664-39-3 1000
Hydrogen Peroxide (52% by weight or greater) 7722-84-1 7500
Hydrogen Selenide 7783-07-5 150 Hydrogen Sulfide 7783-06-4 1500 Hydroxylamine 7803-49-8 2500 Iron, Pentacarbonyl 13463-40-6 250 Isopropylamine 75-31-0 5000 Ketene 463-51-4 100 Methacrylaldehyde 78-85-3 1000 Methacryloyl Chloride 920-46-7 150 Methacryloyloxyethyl Isocyanate 30674-80-7 100 Methyl Acrylonitrile 126-98-7 250 Methylamine, Anhydrous 74-89-5 1000 Methyl Bromide 74-83-9 2500 Methyl Chloride 74-87-3 15000 Methyl Chloroformate 79-22-1 500
CHEMICAL NAME CAS* TQ** Methyl Ethyl Ketone Peroxide (concentration greater than 60%) 1338-23-4 5000
Methyl Fluoroacetate 453-18-9 100 Methyl Fluorosulfate 421-20-5 100 Methyl Hydrazine 60-34-4 100 Methyl Iodide 74-88-4 7500 Methyl Isocyanate 624-83-9 250 Methyl Mercaptan 74-93-1 5000
Methyl Vinyl Ketone 79-84-4 100
Methyltrichlorosilane 75-79-6 500
Nickel Carbonly (Nickel Tetracarbonyl) 13463-39-3 150 Nitric Acid (94.5% by weight or greater) 7697-37-2 500
Nitric Oxide 10102-43-9 250
Nitroaniline (para Nitroaniline) 100-01-6 5000
Nitromethane 75-52-5 2500
Nitrogen Dioxide 10102-44-0 250
Nitrogen Oxides (NO; NO(2); N2O4; N2O3) 10102-44-0 250 Nitrogen Tetroxide (also called Nitrogen Peroxide) 10544-72-6 250
Nitrogen Trifluoride 7783-54-2 5000
Nitrogen Trioxide 10544-73-7 250
Oleum (65% to 80% by weight; also called Fuming Sulfuric Acid)
8014-94-7 1000
Osmium Tetroxide 20816-12-0 100
Oxygen Difluoride (Fluorine Monoxide) 7783-41-7 100
Ozone 10028-15-6 100
Pentaborane 19624-22-7 100
Peracetic Acid (concentration greater 60% Acetic Acid; also called Peroxyacetic Acid)
79-21-0 1000 Perchloric Acid (concentration greater than 60% by weight) 7601-90-3 5000
Perchloromethyl Mercaptan 594-42-3 150
Perchloryl Fluoride 7616-94-6 5000
Peroxyacetic Acid (concentration greater than 60% Acetic Acid; also called Peracetic Acid)
79-21-0 1000 Phosgene (also called Carbonyl Chloride) 75-44-5 100 Phosphine (Hydrogen Phosphide) 7803-51-2 100 Phosphorus Oxychloride (also called Phosphoryl Chloride) 10025-87-3 1000
Phosphorus Trichloride 7719-12-2 1000
Phosphoryl Chloride (also called Phosphorus Oxychloride) 10025-87-3 1000
Propargyl Bromide 106-96-7 100
Propyl Nitrate 627-3-4 2500
Sarin 107-44-8 100
Selenium Hexafluoride 7783-79-1 1000
Stibine (Antimony Hydride) 7803-52-3 500
Sulfur Dioxide (liquid) 7446-09-5 1000
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CHEMICAL NAME CAS* TQ**
Sulfur Tetrafluoride 7783-60-0 250
Sulfur Trioxide (also called Sulfuric Anhydride) 7446-11-9 1000 Sulfuric Anhydride (also called Sulfur Trioxide) 7446-11-9 1000
Tellurium Hexafluoride 7783-80-4 250
Tetrafluoroethylene 116-14-3 5000
Tetrafluorohydrazine 10036-47-2 5000
Tetramethyl Lead 75-74-1 1000
Thionyl Chloride 7719-09-7 250
Trichloro (chloromethyl) Silane 1558-25-4 100 Trichloro (dichlorophenyl) Silane 27137-85-5 2500
Trichlorosilane 10025-78-2 5000
Trifluorochloroethylene 79-38-9 10000
Trimethyoxysilane 2487-90-3 1500
Footnote* Chemical Abstract Service Number