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NIOSH

o-TERPHENYL

ICSC: 1525

1,2-Diphenylbenzene
o-Diphenylbenzene
C18H14
Molecular mass: 230.31
ICSC # 1525 		CAS # 84-15-1
RTECS # WZ6472000
April 21, 2004 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible.
NO open flames.
Water spray, dry powder, carbon dioxide.
EXPLOSION


EXPOSURE


•INHALATION Cough. Sore throat.
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.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Diarrhoea. Nausea. Vomiting.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Vacuum spilled material OR sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.


ICSC: 1525 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.

o-TERPHENYL

ICSC: 1525

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO LIGHT-YELLOW CRYSTALS

PHYSICAL DANGERS:


CHEMICAL DANGERS:
On combustion, forms toxic fumesincludingcarbon monoxide.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as terphenyls) 5 mg/m3; (Ceiling value); (ACGIH 2004).
MAK not established.
OSHA PEL†: C 9 mg/m3 (1 ppm)
NIOSH REL: C 5 mg/m3 (0.5 ppm)
NIOSH IDLH: 500 mg/m3 See: IDLH INDEX


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

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the respiratory tract .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 332°C
Melting point: 56.2°C
Relative density (water = 1): 1.1
Solubility in water: none
Vapour pressure, Pa at 25°C: 0.0033
Relative vapour density (air = 1): 7.9
Relative density of the vapour/air-mixture at 20°C (air = 1): <0.9
Flash point: 163°C o.c.
Octanol/water partition coefficient as log Pow: 5.5

ENVIRONMENTAL
DATA

Bioaccumulation of this chemical may occur in fish.

N O T E S

The occupational exposure limit value should not be exceeded during any part of the working exposure.
NFPA Code: H0; F1; R0;

ADDITIONAL INFORMATION



ICSC: 1525 o-TERPHENYL
(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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