Product Identification

Product Name

1,1,1-Trifluoroethane

Synonyms

Freon 143a
Methylfluoroform

CAS

420-46-2

Formula

C2H3F3

Molecular Weight

84.05

EINECS

206-996-5

RTECS

KJ4110000

RTECS Class

Mutagen; Reproductive Effector

Beilstein/Gmelin

1731552

Beilstein Reference

4-01-00-00122

Physical and Chemical Properties

Appearance

Clear, colorless liquid or vapor with a faint ether odor.

Solubility in water

Insoluble

Melting Point

-111.34

Boiling Point

-50

Vapor Pressure

2400

Density

0.942 g/cm3 (20 C)

Heat Of Vaporization

15.93 kJ/mol

Usage

Refrigerant gas.

Vapor Density

2.92

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water

Eyes

Flush with running water for at least 20 minutes.

Handling and Storage

Storage

Store in a clean, dry place. Keep cool.

Handling

Should not be used for any purpose above atmospheric pressure. Use with sufficient ventilation. Do not mix with air.

Hazards Identification

Inhalation

Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations.

Skin

Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.

Eyes

May cause irritation.

Ingestion

Unlikely route of exposure.

Hazards

Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated. Ruptured cylinders may rocket.

EC Risk Phrase

R 11

EC Safety Phrase

S 16 33

UN (DOT)

2035

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Exposure Effects

The toxological properties of this substance have not been fully investigated.

Poison Class

-

Fire Fighting Measures

Fire Fighting

Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.

Upper exp. limit

20.5

Fire Potential

EXTREMELY FLAMMABLE.

Accidental Release Measures

Small spills/leaks

Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.

Stability and Reactivity

Incompatibilities

Can react with some metals to form dangerous products Incompatible with strong oxidizing and reducing agents Incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.

Stability

Stable at normal temperatures and pressures.

Decomposition

Oxides of carbon, hydrogen fluoride.

Transport Information

UN Number

2035

Hazard Class

2.1