Hazardous Chemicals Handling

Presented by-Md. Raihan Hossain (Sr. Chemist) &Suman Sarkar (Jr. Chemist)

Hazardous Substance: Definition

A 'hazardous substance' is any substance (biological,

chemical, radiological, and/or physical), that has the

potential to cause harm to humans, animals, or the

environment, either by itself or through interaction with

other factors.

Hazardous Substance: Categories

Flammable – Octane Corrosive – Acid (HCl), Base(NaOH, NH3) Toxic - Hydrogen peroxide (>35%), Methyl Chloride Reactive – Organic peroxide, Perchloric acid Biological (infectious) – Oily/waste water Carcinogen (cancer-causing) - synthetic chemicals Radioactive-Americium(smoke detector), gamma ray Explosive – Urea nitrate, Ammonium chlorate,

Pressurized gas

Hazardous Chemicals

Hazardous chemical: Identification

Read MSDS carefully

Follow the labels

Learn about the colors and symbols meaning

Hazardous chemical: Identification cont’d

Color Definition

Hazardous chemical: Identification cont’d

Symbols Definition (Pictograms)

Hazardous chemical: Identification cont’d

Symbols Definition (Pictograms) cont’d

Hazardous Chemicals: Handling

Use proper safety equipment

Take precautions and work carefully

Always follow the procedures and MSDS

Read all labels

Keep yourself and the work area clean

Plan ahead

General:

Hazardous Chemicals: Handling (cont’d)

• Keep containers closed when not in use

• Keep away from ignition sources

• Avoid contact with incompatible materials

• Only transfer to approved containers

Flammable, Corrosive and Toxic Chemicals Handling

Hazardous Chemicals: Handling (cont’d)

• Bond all receiving containers

• Clean up spills and dispose of waste properly

• Use proper ventilations when used in closed area

• Store separately, away from processing and handling areas

Flammable, Corrosive and Toxic Chemicals Handling (cont’d)

Personal Protective Equipment (PPE)

Personal Protective Equipment (PPE) cotn’d

No shorts or Sandals! Use hand gloves, goggles, apron and safety musk!

Routes of Exposure

Inhalation – most common

Absorption

Ingestion

Injection

Overexposure: Symptoms

Eye discomfort

Breathing difficulty

Dizziness

Headache

Nausea

Vomiting

Skin irritation

Incompatible Chemicals

Flammables and oxidizers

Flammables and any ignition source

Acids and cyanides

Strong acids and strong alkalines

Concentrated acids and water

Organic solvents and corrosives

Peroxide and oxidizing gases

Hazard Regulatory Agencies

Occupational Safety and Health Administration (OSHA)

National Fire Protection Association (NFPA)

Environmental Protection Agency (EPA)

Department of Transportation (DOT)

Emergencies

Know emergency phone numbers

Know how to control the spill

Know proper equipment shutdown procedure

Know proper evacuation routes and assembly areas

Know initial steps to take if a certain incident occurs.

First Aid: Eyes Exposure

Don’t rub the eyes

Hold eyelids open and flush with water for 15 minutes

Be careful not to contaminate the other eye

Seek additional medical attention

First Aid: Skin Exposure

Remove the chemical causing the burn

Remove contaminated clothing and jewelry from

burn area

Wash the affected area copiously with a gentle flow

of water for at least 15 min.

Seek additional medical attention

First Aid: Chemical Inhalation

Move the victim to fresh air

Get immediate medical

help

First Aid: Chemical Ingestion

Induce vomiting only if told to do so by Poison Control

Get immediate medical attention

If you have any question(s), then feel free to ask us