2,4-Dinitrophenylhydrazine

  • (2,4-Dinitrophenyl)hydrazine
  • 1-Hydrazino-2,4-dinitrobenzene
Formula
C6H3(NO2)2NHNH2
Structure
Description
Red powder. Distributed as a moist solid containing at least 25% water.
Uses
For the determination of aldehydes and ketones.

Registry Numbers and Inventories.
CAS
119-26-6
EC (EINECS/ELINCS)
204-309-3
R 1 20/21/22 40
S 35 36/37/39
RTECS
MV3325000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
1325
Merck
13,3312
Beilstein/Gmelin
615586
Beilstein Reference
4-15-00-00380
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H6N4O4
Formula mass
198.14
Density
1.659 g/cm3
Solubility in water
Slightly soluble
pKa/pKb
11.18 (pKb)
Partition coefficient, pKow
1.35

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Remove all sources of ignition.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents - heat.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Flammable solid. May burn rapidly with flare burning effect. May be ignited by friction, heat, sparks, or flame. May explode or burn with explosive violence. Extinguishing media: Do NOT use water directly on fire. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. For small fires, use dry chemical, carbon dioxide, sand, earth, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out. For large fires, use water spray, fog or regular foam.
Fire potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.
Combustion products
Fire may produce irritating and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
   Inhalation
The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.
   Skin
No information regarding skin irritation and other potential effects was found.
   Eyes
Causes eye irritation.

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 immediately.
   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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   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
1325
Response guide
Hazard class
4.1
Packing Group
II; III