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NIOSH

DINITROTOLUENE (MIXED ISOMERS)

ICSC: 0465

DNT (mixed isomers)
Methyl dinitrobenzene (mixed isomers)
Dinitrotoluol (mixed isomers)
C7H6N2O4 / C6H3(CH3)(NO2)2
Molecular mass: 182.1
ICSC # 0465 		CAS # 25321-14-6
RTECS # XT1300000
UN # 3454
EC # 609-007-00-9
April 21, 2005 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air. Risk of explosion on contact with many substances.
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! AVOID ALL CONTACT! AVOID EXPOSURE OF (PREGNANT) WOMEN!

•INHALATION Blue lips or finger nails. Blue skin. Headache. Dizziness. Nausea. Confusion. Convulsions. Unconsciousness.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
•SKIN MAY BE ABSORBED! (See Inhalation).
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
•EYES
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION (See Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment.
Fireproof. Separated from strong bases,food and feedstuffsoxidants,strong reducing agents. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access.
Do not transport with food and feedstuffs.
Note: E
T symbol
N symbol
R: 45-23/24/25-48/22-62-68-51/53
S: 53-45-61
UN Hazard Class: 6.1
UN Packing Group: II
ICSC: 0465 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.

DINITROTOLUENE (MIXED ISOMERS)

ICSC: 0465

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
YELLOW CRYSTALLINE POWDER , WITH CHARACTERISTIC ODOUR.

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

CHEMICAL DANGERS:
Heating may cause violent combustion or explosion. The substance decomposes on heating producing toxic and corrosive fumesincluding nitrogen oxides even in absence of air. Reacts with reducing agents , strong bases and oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.2 mg/m3 as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); BEI issued; (ACGIH 2005).
MAK: skin absorption (H);
Carcinogen category: 2;
(DFG 2004).
OSHA PEL: TWA 1.5 mg/m3 skin
NIOSH REL: Ca TWA 1.5 mg/m3 skin See Appendix A
NIOSH IDLH: Ca 50 mg/m3 See: 25321146


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and 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 when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the blood , resulting in formation of methaemoglobin. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the blood , resulting in formation of methaemoglobin. This substance is possibly carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

PHYSICAL
PROPERTIES

Decomposes below boiling point at 250-300°C
Melting point: 54-71°C
Relative density (water = 1): 1.3 (liquid)
Density: 1.52 g/cm3 (solid)
Solubility in water:
very poor

Vapour pressure, Pa at 20°C: 2.4
Relative vapour density (air = 1): 6.28
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 207°C c.c.
Auto-ignition temperature: 400°C
Octanol/water partition coefficient as log Pow: 2.0

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Commercial grades of DNT typically consist of a mixture of all 6 isomers, but mainly 2,4-DNT(78%) and 2,6-DNT (19%). Other UN-number: 1600 (molten). Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home. See also ICSC0727 2,4-Dinitrotoluene and 0728 2,6-Dinitrotoluene.
Transport Emergency Card: TEC (R)-61S3454 or 61GT2-II

NFPA Code: H3; F1; R3;

ADDITIONAL INFORMATION



ICSC: 0465 DINITROTOLUENE (MIXED ISOMERS)
(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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