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NIOSH

N,N'-DIPHENYL-para-PHENYLENEDIAMINE

ICSC: 1181

N,N-Diphenyl-1,4-benzenediamine
1,4-bis(Phenylamino)benzene
1,4-Dianilinobenzene
C6H5NHC6H4NHC6H5 / C18H16N2
Molecular mass: 260.3
ICSC # 1181 		CAS # 74-31-7
RTECS # ST2275000
EC # 612-132-00-1
October 23, 1995 Validated

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.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

•INHALATION
Local exhaust.
Fresh air, rest.
•SKIN
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES
Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place.
Separated from strong oxidants. Keep in a well-ventilated room.

Xi symbol
R: 43-52/53
S: 2-24-37-61
ICSC: 1181 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

N,N'-DIPHENYL-para-PHENYLENEDIAMINE

ICSC: 1181

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR GREY POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes including nitrogen oxides . Reacts with oxidants .

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization.

PHYSICAL
PROPERTIES

Boiling point at 0.066 kPa: 220-225°C
Melting point: 150-151°C
Relative density (water = 1): 1.2
Solubility in water: none
Relative vapour density (air = 1): 9.0

ENVIRONMENTAL
DATA


N O T E S

Commercial grades of the compound are greenish-brown. Agerite, Altofane-Dif, Diafen FF, Flexamine G and Permanax 18 are trade names. Card has been partly updated in April 2005. See section EU classification.

ADDITIONAL INFORMATION



ICSC: 1181 N,N'-DIPHENYL-para-PHENYLENEDIAMINE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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