Picric acid

  • Picronitric acid
  • 2,4,6-Trinitrophenol
Formula
C6H3N3O7
Structure
Description
Can be detonated with a number 8 electric blasting cap.
Uses
Medication (vet).

Registry Numbers and Inventories.
CAS
88-89-1
EC (EINECS/ELINCS)
201-865-9
EC Index Number
609-009-00-X
EC Class
Explosive; Forms very sensitive explosive metallic compounds; Toxic
RTECS
TJ7875000
RTECS class
Mutagen
UN (DOT)
1344
Merck
12,7562
Beilstein/Gmelin
423400
Beilstein Reference
4-16-00-00984
Swiss Giftliste 1
G-2754
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H3N3O7
Formula mass
229.11
Melting point, °C
122-123
Boiling point, °C
255
Vapor pressure, mmHg
0.00364 (100 C)
Vapor density (air=1)
7.9
Density
1.763 g/cm3
Solubility in water
1.4 g/100 ml
Viscosity
12 cp (125 C)
Refractive index
1.763 (20 C)
pKa/pKb
0.35 (pKa)
Partition coefficient, pKow
1.33
Heat of vaporization
87.92 kJ/mol
Heat of combustion
-2589 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep container closed to prevent drying out. Keep away from metals. Material can explode if dry. Do not store on concrete.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Material is heat, shock and/or friction sensitive. Use care in handling and storage. Loosen closure cautiously before opening. Avoid contact with skin and eyes. Avoid contact with heat, sparks and flame. Container should be opened by a technically qualified person. Avoid mechanical shock and friction.
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.
Small spills/leaks
Remove all sources of ignition. Carefully scoop up and place into appropriate disposal container. If the material is dry, explosives experts may be necessary to dispose of the spill. Isolate area and deny entry. Wet area to prevent drying out. Provide ventilation.
Stability
Substance is shock sensitive and thermally unstable.
Incompatibilities
Metals; strong bases; ammonia; strong reducing agents; strong oxidizing agents; concrete; plaster;
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide.

Fire.
Flash Point,°C
150
Autoignition, °C
300
Fire fighting
Dangerously explosive. Do not fight fires in a cargo of explosives. Evacuate area and let burn.
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
3
 
Flammability
4
 
 
Reactivity
4
 

Health.
Exposure limit(s)
OSHA PEL: TWA 0.1 mg/m3 skin NIOSH REL: TWA 0.1 mg/m3 ST 0.3 mg/m3 skin NIOSH IDLH: 75 mg/m3
Poison_Class
2
Exposure effects
Prolonged or repeated eye contact may cause conjunctivitis. Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration. Prolonged or repeated exposure may cause yellow staining of the skin and conjunctiva and yellow vision.
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause kidney damage. May cause headache. May cause tremors and convulsions. May cause unconsciousness. May cause acute hepatitis.
   Inhalation
May cause respiratory tract irritation. May cause effects similar to those described for ingestion. May cause kidney damage.
   Skin
Causes skin irritation. If absorbed, causes symptoms similar to those of ingestion. May cause dermatitis.
   Eyes
Causes eye irritation. May result in corneal injury.

First aid
 
   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. Induce vomiting by giving one teaspoon of Syrup of Ipecac.
   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 immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1344
Response guide
Hazard class
4.1
Packing Group
I
 
USCG CHRIS Code
PRI
 
Std. Transport #
4901510