Product Identification

Product Name

Ethylenetetracarbonitrile

Synonyms

1,1,2,2-Tetracyanoethene
1,1,2,2-Tetracyanoethylene
Ethylenetetracarbonitrile
TCNE
Tetracyanoethene
Tetracyanoethylene

CAS

670-54-2

Formula

C6N4

Molecular Weight

128.09

EINECS

211-578-0

RTECS

KM7300000

RTECS Class

Other

Merck

12,9336

Beilstein/Gmelin

1679885

Beilstein Reference

4-02-00-02450

EC Class

very toxic

Physical and Chemical Properties

Appearance

Beige powder.

Solubility in water

Very soluble

Boiling Point

223

Vapor Pressure

0.12 (25 C)

Density

1.323 g/cm3 (23 C)

Partition Coefficient

-1.64

Heat Of Vaporization

45.6 kJ/mol

Refractive Index

1.560 (25 C)

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 immediately.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

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

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C).

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not ingest or inhale.

Hazards Identification

Ingestion

May be fatal if swallowed. The toxicological properties of this substance have not been fully investigated. May cause central nervous system effects.

Inhalation

Inhalation of dust may cause respiratory tract irritation.

Skin

No information regarding skin irritation and other potential effects was found.

Eyes

Dust may cause mechanical irritation.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 28 23/24 36/37/38

EC Safety Phrase

S 26 28 36/37/39 45

UN (DOT)

2811

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

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

94

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids, strong bases, strong oxidizing agents, 1-methylsilacyclopenta-2,-4diene.

Decomposition

Hydrogen cyanide, nitrogen oxides, carbon monoxide, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2926 90 95