topic 3: chemical hazards

what are the types of hazards under the Globally Harmonized System of Classification & Labelling?

physical health environmental

what are the types of physical hazards?

oxidizer explosive corrosive flammable gases under pressure

physical hazard: what is an example of an oxidizer?

oxidizing gas liquid solid

physical hazard: what is an example of an explosive?

organic peroxides

physical hazard: what is an example of a corrosive?

corrosive to metals

physical hazard: what is an example a flammable?

gases aerosols

what are the type of health hazards?

acute toxicity harmful corrosion toxicity

health hazard: what is an example of acute toxicity?

respiratory irritation

health hazard: what is an example harmful?

skin irritation

health hazard: what is an example corrosion?

skin corrosion

health hazard: what is an example toxicity?

carcinogenicity

what are the types of environmental hazards?

harmful environmental hazard

environmental hazard: what is an example of harmful and environmental hazard?

acute toxicity hazardous to aquatic environment hazardous to ozone layer

what is a safety data sheet?

it covers wide range of information to ensure safe handling and response

what is under the identification section in the SDS

name composition supplier

what is under hazard information section in the SDS?

GHS pictogram signal word precautionary statement

what must be included when labelling a chemical product?

product name

GHS pictogram

signal word

hazard statement

precautionary statement

supplementary information

supplier information

what is the cut off volume for simplified product label?

125ml

what must be included when labelling a chemical product which is less than 125ml?

product name

GHS pictogram

what are the different factors of handling chemical hazards?

handling storage transport disposal

how should you handle chemical hazards?

use PPE

use fumehood when mixing hazardous chemicals ro prevent inhalation of fumes or vapors

follow standard operation procedures

how should we store chemical hazards: in terms of breakable containers?

breakable chemical containers should be stored in a secondary container

how should we store chemical hazards: in terms date

all chemical containers should be dated when received or opened

what are the DOs in storing chemicals?

away from heat source

properly labelled

by compatibility then alphabetical

DOs in storing flammable chemical hazards?

store in a 1hr-fire rated storage cabinet away from heat source or in a cool, well-ventilated area

DONTs in storing flammable chemical hazards?

do not store flammable with oxidizing chemicals or reactive chemical

DOs in storing corrosive chemicals

store corrosives at low shelves and in a secondary container to minimize spill if spilled

DONTs in storing corrosive chemicals: acid and alkalis

do not store acids and alkalis together as they can react violently when mixed

DONTs in storing corrosive chemicals: acids and flammables

do not store acids with flammables as most acids are oxidizers

DOs in storing gaseous chemicals: quantities

store gaseous chemicals in minimum quantities in an upright position with labels like full in use or empty

DOs in storing gaseous chemicals: how is it secured?

stationary gas cylinders shall be secured with safety chains to prevent movement

DONTs in storing gaseous chemicals

do not store near heat source, potential physical damage and incompatible gases

how should chemicals be transported: incompatible chemicals

should not be transported on the same cart

how should chemicals be transported: open containers

open containers should not be transported

how should chemicals be transported: in terms of bottles

bottles should be transported on the cart with side rails and secondary containers

how to dispose waste chemicals

do not pour waste chemicals into public sink