Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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N,N'-Diphenylhydrazine(122-66-7)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
N,N'-Diphenylhydrazine
Synonyms
1,2-Di(phenyl)hydrazine
Diphenylhydrazine
Hydrazobenzene
N,N'-Bianiline
CAS
122-66-7
Formula
C12H12N2
Molecular Weight
184.26
EINECS
204-563-5
RTECS
MW2625000
RTECS Class
Tumorigen; Mutagen
Beilstein/Gmelin
639793
Beilstein Reference
4-15-00-00056
EC Index Number
007-021-00-4
EC Class
Carcinogenic Category 2; Harmful; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Orange powder or a bright orange crystalline solid.
Solubility in water
1 g/L
Melting Point
123
Boiling Point
309
Vapor Pressure
0.07 (25 C)
Density
1.158 g/cm3 (16 C)
Partition Coefficient
2.94
Heat Of Vaporization
46.6 kJ/mol
Heat Of Combustion
-6695 kJ/mol
Usage
Chemical intermed for benzidine, an intermed for dyes, in synthesis of phenylbutazone (antiarthritic drug).
Odor threshold
1-10 ppm

First Aid Measures

Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage
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 ingestion and inhalation.

Hazards Identification

Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Skin
May cause skin irritation.
Eyes
May cause eye irritation.
Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Hazards
Contact with metals may evolve flammable hydrogen gas.
UN (DOT)
2811

Exposure Controls/Personal Protection

Personal 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
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure Effects
Animal studies have reported the development of tumors.
Poison Class
1*

Fire Fighting Measures

Flash Point
88
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Upper exp. limit
5.5
Lower exp. limit
.7
Fire Potential
This material is probably combustible.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities
Oxidizing agents.
Stability
Stable under normal temperatures and pressures.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2811
Hazard Class
6.1
Packing Group
I; II; III
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