2,4,6-Trinitrobenzoic acid

  • Trinitrobenzoic acid, wetted with not less than 30% water
  • 1-Carboxy-2,4,6-trinitrobenzene
  • sym-Trinitrobenzoic acid
  • TNBA
Formula
C7H3N3O8
Structure
Description
A sludge of yellow crystals.
Uses
Reagent in microcrystalline tests for alkaloids.

Registry Numbers and Inventories.
CAS
129-66-8
EC (EINECS/ELINCS)
204-958-2
UN (DOT)
1355
Merck
12,9857
Beilstein/Gmelin
1891611
Beilstein Reference
4-09-00-01362
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H3N3O8
Formula mass
257.12
Melting point, °C
228.7
Density
1.785 g/cm3
Solubility in water
Very soluble
pKa/pKb
0.42 (pKa)
Partition coefficient, pKow
1.10

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Keep spilled material wet. Do not attempt to sweep up dry material.
Stability
No data.
Incompatibilities
If mixed with reducing agents, including hydrides, sulfides and nitrides, they may begin a vigorous reaction that culminates in a detonation.
Decomposition
When heated to decomposition it emits toxic fumes of nitrogen oxides.

Fire.
Fire fighting
Dangerously explosive. Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Flammable/combustible material.
Hazards
May be ignited by heat, sparks or flames. DRIED OUT material may explode if exposed to heat, flame, friction or shock; Treat as an explosive. Keep material wet with water or treat as an explosive. Runoff to sewer may create fire or explosion hazard. MAY EXPLODE AND THROW FRAGMENTS 1600 meters (1 MILE) OR MORE IF FIRE REACHES CARGO.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
See inhalation.
   Inhalation
May be toxic if inhaled, igestioned or on contact..
   Skin
Can be absorbed through the skin. May cause burns. See inhalation.
   Eyes
May cause burns. See inhalation.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove and isolate contaminated clothing and shoes. Flush with running water for at least 20 minutes.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1355
Response guide
Hazard class
4.1
Packing Group
I
 
Std. Transport #
4917150