Product Identification

Product Name

Propylene glycol

Synonyms

1,2-Dihydroxypropane
1,2-Propanediol
Methyl ethylene glycol
Propane-1,2-diol

CAS

57-55-6

Formula

C3H8O2

Molecular Weight

76.099999999999994

EINECS

200-338-0

RTECS

TY2000000

RTECS Class

Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector; Human Data; Primary Irritant

Merck

12,8040

Beilstein/Gmelin

1340498

Beilstein Reference

3-01-00-02142

Physical and Chemical Properties

Appearance

Clear, viscous, colorless liquid, practically odorless, hygroscopic.

Solubility in water

Miscible

Melting Point

-59

Boiling Point

187.6

Vapor Pressure

0.2 (23 C)

Density

1.04 g/cm3 (20 C)

Partition Coefficient

-.92

Heat Of Vaporization

66.27 kJ/mol

Heat Of Combustion

-1828 kJ/mol

Usage

Component of cellophane.

Saturation Concentration

Approximately 90-260 ppm at 20 C (calc.)

Vapor Density

2.62

Odor threshold

Odorless

Refractive Index

1.4324 (20C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Low hazard for usual industrial handling. May cause respiratory tract irritation.

Skin

Causes moderate skin irritation. Contact with the skin may cause erythema, dryness, and defatting.

Eyes

Causes mild eye irritation. Contact may cause irritation, tearing, and burning pain.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Low hazard for usual industrial handling. May cause hemoglobinuric nephrosis. May cause changes in surface EEG.

EC Safety Phrase

S 24/25

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

May cause reproductive and fetal effects. Laboratory experiments have resulted in mutagenic effects. Exposure to large doses may cause central nervous system depression. Chronic ingestion may cause lactic acidosis and possible seizures.

Poison Class

-

Fire Fighting Measures

Flash Point

99

Autoignition

371

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use alcohol foam. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

17.4

Lower exp. limit

2.4

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.

Stability and Reactivity

Incompatibilities

Oxidizing agents, reducing agents, acid chlorides, nitric acid, acid anhydrides, silver nitrate, hydrofluoric acid, chloroformates, moisture.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acetic acid, propionaldehyde, lactic acid, pyruvic acid.

Transport Information

HS Code

2905 32 00