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PHENYLHYDRAZINE ICSC: 0938
Date of Peer Review: April 2005

Hydrazinobenzene
Monophenylhydrazine
CAS # 100-63-0 C6H8N2 / C6H5NHNH2
RTECS # MV8925000 Molecular mass: 108.1
UN # 2572
EC # 612-023-00-9
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.
Water spray, alcohol-resistant foam, powder, carbon dioxide.
EXPLOSION Above 88C explosive vapour/air mixtures may be formed.
Above 88C use a closed system, ventilation.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
AVOID ALL CONTACT!

Inhalation Cough. Sore throat. Weakness. Dizziness.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin MAY BE ABSORBED! Dry skin. Redness. Pain.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness. Pain. Blurred vision.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Diarrhoea. Dizziness. Nausea. Vomiting. Weakness.
Do not eat, drink, or smoke during work.
Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Personal protection: complete protective clothing including self-contained breathing apparatus. If liquid: collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. If solid: sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment.
Do not transport with food and feedstuffs.
EU Classification
Symbol: T, N
R: 45-23/24/25-36/38-43-48/23/24/25-68-50
S: 53-45-61
Note: [E]
UN Classification
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT1-II
NFPA Code: H3; F2; R0;
Separated from strong oxidants, food and feedstuffs. Store in an area without drain or sewer access.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
PHENYLHYDRAZINE ICSC: 0938
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW OILY LIQUID OR CRYSTALS. TURNS BROWN RED ON EXPOSURE TO AIR AND LIGHT.

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes including nitrogen oxides. Reacts with strong oxidants. Reacts violently with lead dioxide.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.1 ppm as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2005).
MAK: skin absorption (H); sensitization of skin (Sh); Carcinogen category: 3B; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes the skin and the respiratory tract. The substance may cause effects on the blood, resulting in hemolysis. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the blood, resulting in anaemia. This substance is possibly carcinogenic to humans.
PHYSICAL PROPERTIES
Boiling point (decomposes): 243.5C
Melting point: 19.5C
Relative density (water = 1): 1.1
Solubility in water, g/100 ml at 25C: 14.5
Vapour pressure, Pa at 20C: 10
Relative vapour density (air = 1): 3.7
Flash point: 88C c.c.
Auto-ignition temperature: 174C
Explosive limits, vol% in air: 1.1-?
Octanol/water partition coefficient as log Pow: 1.25
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms.
NOTES
The symptoms of hemolysis do not become manifest until hours have passed. Do NOT take working clothes home.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999