Laboratory chemical disposal procedure

Laboratory chemical disposal procedure

Once printed this document is an uncontrolled version and should be checked against the electronic version for validity. Document: ……… Procedure

Aim

To control and manage the disposal of all chemicals originating laboratory facilities. In addition, to prevent incompatible chemicals being stored and transported together.

Scope

This procedure applies to all laboratory personnel requesting the assistance of Oricol staff in the disposal of laboratory chemicals.

Responsibility

• Oricol contract manager • Oricol drivers

• Laboratory supervisors

Method

• When the need to dispose of a chemical arises, a TRF (treatment request form) must be completed and sent to the Oricol contract manager. An example of a TRF can be seen from Appendix A

• Chemical names must be written out in full on the TRF and no abbreviations or chemical formulas must be used (i.e. “Ether” instead of “Et2O and “Dimethylphosphinoethane” instead of “DMPE”). The same applies for the chemical containers

• The chemicals that need to be disposed of must be kept until the confirmation of collection is confirmed. Collection of chemicals for incineration will be every Friday.

• All chemical containers will also need to be identified by means of a colour coded sticker obtainable from the Oricol contract manager. In the table below the chemical class and colour is shown

Chemical class

Flammable and Combustible Materials

Oxidizing Materials Organics

Poisonous and Infectious Materials Aqueous waste

Corrosive materials - Acids Corrosive materials - Bases

Laboratory chemical disposal procedure

• All containers must be properly sealed. The bottle or jar must have a cap that fits tightly. If the chemical is a liquid, there must be at least 1 inch of room at the top of the container. The outside of the container must be clean and dry.

• Under no circumstances will chemicals be removed that aren’t identifiable, have no stickers on them, if the containers are leaking or if they aren’t in appropriate containers.

• The following chemicals in the same row must NEVER be mixed together:

Acids Bases Flammable and Combustible Materials Oxidizing Materials Poisonous and Infectious Materials Organics Acids Alkali or alkali earth metals Aqueous waste

Laboratory chemical disposal procedure

Once printed this document is an uncontrolled version and should be checked against the electronic version for validity. Document: ……… Procedure

Appendix A

Treatment Request Form (TRF) TPT Sales Person Len Cloete

TRF Number Special Request

Transport Own Transport:



TPT to arrange transport:
Generator Details Waste Management Details Company Name Pretoria University Oricol environmental Services

Contact Person ############## Paul Eloff

Cell Number ############## 074 184 3497

Tel Number ############## 011 922 5900

Fax Number ############## 011 922 5901

Email Address ############## [email protected]

Physical Address ############## 16 Vuurslag ave, Spartan, Gauteng

It em N o . Product Name 1 C/ P Container Capacity and Type Number of Containers Estimated Quantity 2 Physical Nature of Waste Material

1 Nitric Acid C 2L 1 2L Liquid

2 Sulphuric Acid C 5L 3 15L Liquid

3 Nitric Acid C 5L 1 5L Liquid

4 Hydrochloric Acid C 5L 1 5L Liquid

5 Hydrochloric Acid C 2L 4 8L Liquid

6 Sulphuric Acid C 2L 2 4L Liquid

7 Hydrochloric Acid waste C 2.5L 1 2.5L Liquid

TOTAL ______________________

1

Categorize C for Chemicals and P for Pharmaceuticals

2

Physical Nature to be specified according to symbol. Solid = S, Sludge Solid = SS, Sludge Liquid = SL, Liquid = L, Powder = P,

Contaminated Soil = CS, Gas Cylinder = G and Aerosol can = A

Laboratory chemical disposal procedure

Appendix B

Chemical Class Examples of compatibility

Can put in the same waste container bottle for disposal

Flammable solvents

acetone, methanol, ethanol, toluene, xylene, acetonitrile, benzene etc.. (can all be put in the same disposal container)

Halogenated solvents

halothane, methylene chloride, chloroform, carbon tetrachloride, trichloroethane, trichloroethylene

(can all be put in the same disposal container) Organic acids formic acid, acetic acid, propionic acid

(can all be put in the same disposal container)

Chemical Class Examples of Incompatibility

Cannot put in the same container bottle for disposal

Heavy metal solutions

aqueous solutions containing arsenic, barium, cadmium, chromium, copper, lead, mercury, osmium, selenium, silver etc..

(do not mix together, keep each type separate)

Mineral acids hydrochloric acid, nitric acid, sulphuric acid, perchloric acid

(do not mix together, keep each type of acid in separate container) Inorganic Bases sodium hydroxide, potassium hydroxide, ammonia

(do not mix together, keep each type in separate container)

Oxidizers potassium nitrate, hydrogen peroxide,potassium permanganate, bleach

(do not mix together, keep all in separate containers)

Reactive wastes phosphorus pentoxide, sodium hydride, sodium methoxide, dry picric acid,

Laboratory chemical disposal procedure

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Appendix C

CHEMICAL INCOMPATIBLE CHEMICAL(S)

Acetic acid aldehyde, bases, carbonates, hydroxides, metals, oxidizers, peroxides, phosphates, xylene

Acetylene halogens (chlorine, fluorine, etc.), mercury, potassium, oxidizers, silver

Acetone acids, amines, oxidizers, plastics

Alkali and alkaline earth metals acids, chromium, ethylene, halogens, hydrogen, mercury, nitrogen, oxidizers, plastics, sodium chloride, sulfur

Ammonia acids, aldehydes, amides, halogens, heavy metals, oxidizers, plastics, sulfur

Ammonium nitrate acids, alkalis, chloride salts, combustible materials, metals, organic materials, phosphorous, reducing agents, urea

Aniline acids, aluminum, dibenzoyl peroxide, oxidizers, plastics Azides acids, heavy metals, oxidizers

Bromine

acetaldehyde, alcohols, alkalis, amines, combustible materials, ethylene, fluorine, hydrogen, ketones (acetone, carbonyls, etc.), metals, sulfur

Calcium oxide acids, ethanol, fluorine, organic materials

Carbon (activated) alkali metals, calcium hypochlorite, halogens, oxidizers Carbon tetrachloride benzoyl peroxide, ethylene, fluorine, metals, oxygen, plastics,

silanes

Chlorates powdered metals, sulfur, finely divided organic or combustible materials

Chromic acid acetone, alcohols, alkalis, ammonia, bases

Chromium trioxide benzene, combustible materials, hydrocarbons, metals, organic materials, phosphorous, plastics

Chlorine

alcohol's, ammonia, benzene, combustible materials, flammable compounds (hydrazine), hydrocarbons (acetylene, ethylene, etc.), hydrogen peroxide, iodine, metals, nitrogen, oxygen, sodium hydroxide

Chlorine dioxide hydrogen, mercury, organic materials, phosphorous, potassium hydroxide, sulfur

Copper calcium, hydrocarbons, oxidizers Hydroperoxide reducing agents

Cyanides acids, alkaloids, aluminum, iodine, oxidizers, strong bases Flammable liquids ammonium nitrate, chromic acid, hydrogen peroxide, nitric acid,

Laboratory chemical disposal procedure

Fluorine

alcohol's, aldehydes, ammonia, combustible materials,

halocarbons, halogens, hydrocarbons, ketones, metals, organic acids

Hydrocarbons (Such as butane,

propane benzene, turpentine, etc.) acids, bases, oxidizers, plastics

Hydrofluoric acid metals, organic materials, plastics, silica (glass), (anhydrous) sodium

Hydrogen peroxide

acetylaldehyde, acetic acid, acetone, alcohol's carboxylic acid, combustible materials, metals, nitric acid, organic compounds, phosphorous, sulfuric acid, sodium, aniline

Hydrogen sulfide acetylaldehyde, metals, oxidizers, sodium Hypochlorites acids, activated carbon

Iodine acetylaldehyde, acetylene, ammonia, metals, sodium

Mercury acetylene, aluminum, amines, ammonia, calcium, fulminic acid, lithium, oxidizers, sodium

Nitrates acids, nitrites, metals, sulfur, sulfuric acid Nitric acid

acetic acid, acetonitrile, alcohol's, amines, (concentrated)

ammonia, aniline, bases, benzene, cumene, formic acid, ketones, metals, organic materials, plastics, sodium, toluene

Oxalic acid oxidizers, silver, sodium chlorite

Oxygen

acetaldehyde, secondary alcohol's, alkalis and alkalines, ammonia, carbon monoxide, combustible materials, ethers, flammable

materials, hydrocarbons, metals, phosphorous, polymers

Perchloric acid

acetic acid, alcohols, aniline, combustible materials, dehydrating agents, ethyl benzene, hydriotic acid, hydrochloric acid, iodides, ketones, organic material, oxidizers, pyridine

Peroxides, organic acids (organic or mineral) Phosphorus (white) oxygen (pure and in air), alkalis

Potassium acetylene, acids, alcohols, halogens, hydrazine, mercury, oxidizers, selenium, sulfur

Potassium chlorate acids, ammonia, combustible materials, fluorine, hydrocarbons, metals, organic materials, sugars

Potassium perchlorate (also see chlorates)

alcohols, combustible materials, fluorine, hydrazine, metals, organic matter, reducing agents, sulfuric acid

Potassium permanganate benzaldehyde, ethylene glycol, glycerol, sulfuric acid

Silver acetylene, ammonia, oxidizers, ozonides, peroxyformic acid Sodium acids, hydrazine, metals, oxidizers, water

Laboratory chemical disposal procedure

Once printed this document is an uncontrolled version and should be checked against the electronic version for validity. Document: ……… Procedure

Sodium peroxide acetic acid, benzene, hydrogen sulfide metals, oxidizers, peroxyformic acid, phosphorous, reducers, sugars, water

Sulfides acids

Laboratory chemical disposal procedure

Revision Notes