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BIPHENYL ICSC: 0106
Date of Peer Review: April 1994

Diphenyl
Phenylbenzene
Dibenzene
CAS # 92-52-4 C12H10 / C6H5C6H5
RTECS # DU8050000 Molecular mass: 154.2
UN # 3077
EC # 601-042-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
Water spray, powder, AFFF, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding).

EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough. Nausea. Vomiting.
Avoid inhalation of fine dust and mist. Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (Further see Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: A/P2 filter respirator for organic vapour and harmful dust. Do NOT let this chemical enter the environment.
Do not transport with food and feedstuffs.
EU Classification
Symbol: Xi, N
R: 36/37/38-50/53
S: (2-)-23-60-61
UN Classification
UN Hazard Class: 9
UN Pack Group: III
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-90GM7-III
NFPA Code: H 2; F 1; R 0;
Separated from food and feedstuffs, oxidants.
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 2004

SEE IMPORTANT INFORMATION ON BACK


BIPHENYL ICSC: 0106
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS OR FLAKES, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
Reacts with oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.2 ppm as TWA; (ACGIH 2004).
MAK: skin absorption (H); Carcinogen category: 3B; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation 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 and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the liver and nervous system, resulting in impaired functions.
PHYSICAL PROPERTIES
Boiling point: 256C
Melting point: 70C
Relative density (water = 1): 1.04
Solubility in water: none
Vapour pressure, Pa at 71C: 133
Relative vapour density (air = 1): 5.3
Relative density of the vapour/air-mixture at 20C (air = 1): 1.0
Flash point: 113C c.c
Auto-ignition temperature: 540C
Explosive limits, vol% in air: 0.6 (at 111C) - 5.8 (at 166C)
Octanol/water partition coefficient as log Pow: 3.16/4.09
ENVIRONMENTAL DATA
This substance may be hazardous to the environment; special attention should be given to water quality. Bioaccumulation of this chemical may occur along the food chain, for example in plants. It is strongly advised not to let the chemical enter into the environment because it persists in the environment.
NOTES
Do NOT take working clothes home. Dowtherm A is a trade name.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
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 2004