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NIOSH

TETRYL

ICSC: 0959

N-Methyl-N,2,4,6-tetranitroaniline
Picrylnitromethylamine
Nitramine
C7H5N5O8 / (NO2)3C6H2N(CH3)NO2
Molecular mass: 287.15
ICSC # 0959 		CAS # 479-45-8
RTECS # BY6300000
UN # 0208
EC # 612-017-00-6
July 10, 1997 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Gives off toxic fumes in a fire or explosion. Explosive.
NO open flames, NO sparks, and NO smoking. NO contact with hot surfaces.
CONSIDER EVACUATION. Water may be used on small fires. Do not attempt to extinguish large fires.
EXPLOSION Finely dispersed particles form explosive mixtures in air. Risk of fire and explosion when shocked or exposed to heat or flame.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT expose to friction or shock. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE
PREVENT DISPERSION OF DUST!

•INHALATION Insomnia. Abdominal pain. Cough. Diarrhoea. Headache. Sore throat. Nosebleeds.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
•SKIN Redness. Yellow stains of skin and hair.
Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Wear protective gloves when administering first aid.
•EYES Redness. Pain.
Safety goggles, or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Nausea. (See Inhalation).
Do not eat, drink, or smoke during work.
Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! (extra personal protection: P3 filter respirator for toxic particles).
Fireproof. Separated from strong oxidants. Keep in the dark. Keep in a separate building protected from shock, under lock and key.

E symbol
T symbol
R: 2-23/24/25-33
S: 1/2-35-45
UN Hazard Class: 1.1D
ICSC: 0959 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

TETRYL

ICSC: 0959

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PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS TO YELLOW CRYSTALS

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
May explosively decompose on shock, friction, or concussion. The substance decomposes explosively on heating to 187°C. Reacts with some oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 1.5 mg/m3 (as TWA) (ACGIH 1997).
MAK: skin absorption (H); sensitization of skin (Sh);
Carcinogen category: 3B
(DFG 2008).
OSHA PEL: TWA 1.5 mg/m3 skin
NIOSH REL: TWA 1.5 mg/m3 skin
NIOSH IDLH: 750 mg/m3 See: 479458


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on dispersion of aerosol.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the nervous system.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma. The substance may have effects on the liver, kidneys and blood.

PHYSICAL
PROPERTIES

Melting point: 130°C
Relative density (water = 1): 1.57
Solubility in water: none
Vapour pressure, kPa at 20°C: <0.1
Flash point: explodes in air at 187°C

ENVIRONMENTAL
DATA


N O T E S

Card has been partially updated in November 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 0959 TETRYL
(C) IPCS, CEC, 1994
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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