Tetramethylsuccinic acid dinitrile
Tetramethylbutanedinitrile
TMSN
C8H12N2 / (CH3)2C(CN)C(CN)(CH3)2
Molecular mass: 136.2
ICSC # 1121
CAS # 3333-52-6
RTECS # WN4025000
UN # 2811
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
NO contact with strong oxidants.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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•Inhalation
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Convulsions.
Dizziness.
Headache.
Nausea.
Unconsciousness.
Vomiting.
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Ventilation (not if powder), local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
(See Inhalation).
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Safety goggles
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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(See Inhalation).
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: complete protective clothing including self-contained breathing apparatus.
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Separated from
strong oxidants,
food and feedstuffs
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Cool.
Dry.
Keep in a well-ventilated room.
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Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS
ODOURLESS SOLID IN VARIOUS FORMS
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing toxic fumesincluding cyanidesandnitrogen oxides.
Reacts
with
strong oxidants
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV: 0.5 ppm as TWA; (skin); (ACGIH 2004).
MAK: IIb (not established but data is available); skin absorption (H); (DFG 2004).
OSHA PEL: TWA 3 mg/m3 (0.5 ppm) skin
NIOSH REL: TWA 3 mg/m3 (0.5 ppm) skin
NIOSH IDLH: 5 ppm See: 3333526
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
through the skin
and
by ingestion.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance may cause effects on the
central nervous system
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Exposure at high concentration may result in death.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Melting point: 170°C (sublimes)
Density: 1.07 g/ml
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Solubility in water: none
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Environmental
Data
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N O T E S
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The substance is combustible but no flash point is available in literature.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-61GT2-II
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ADDITIONAL INFORMATION
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ICSC: 1121
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TETRAMETHYL SUCCINONITRILE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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