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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1,3-Diphenylbenzene(92-06-8)

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
1,3-Diphenylbenzene
Synonyms
1,1':3',1''-Terphenyl
1,3-Diphenylbenzene
1,3-Terphenyl
3-Phenylbiphenyl
Isodiphenylbenzene
m-Diphenylbenzene
CAS
92-06-8
Formula
C18H14
Molecular Weight
230.32
EINECS
202-122-1
RTECS
WZ6470000
RTECS Class
Other
Beilstein/Gmelin
1864778
Beilstein Reference
4-05-00-02480

Physical and Chemical Properties

Appearance
Yellow needles from alc. Faint, pleasant odor /commercial terphenyl mixtures/.
Solubility in water
Insoluble
Melting Point
86-87
Boiling Point
379
Vapor Pressure
0.01 (20 C)
Density
1.20 g/cm3 (20 C)
Heat Of Vaporization
64.2 kj/mol
Usage
Terphenyl mixtures are used industrially as heat storage and transfer agents, as textile dye carriers, and as intermediates in the production of nonspreading lubricants. From 1960-1970, technical grade terphenyls were used as coolants for nuclear reactors, whereas contemporary use has been in solar-heating systems. Terphenyl mixtures.

First Aid Measures

Ingestion
Dilution: following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child). Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage
Keep tightly closed. Store in a cool and dry place.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Inhalation
Respiratory tract irritation and bronchitis have been reported.
Skin
Percutaneous absorption through intact skin has been noted.
Eyes
Eye and mucous membrane irritation may occur.
Ingestion
Nausea, diffuse pain, and indigestion have been reported in workers with prolonged exposure to biphenyl.
Hazards
Fire may produce irritating or poisonous gases.
EC Risk Phrase
R 36/37/38
EC Safety Phrase
S 26 36
UN (DOT)
1325

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode. Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive-pressure mode.
Exposure Effects
Headache, fatigue, numbness, and aching limbs have occurred in workers. Peripheral and central nerve damage may occur.
Exposure limit(s)
NIOSH REL: C 5 mg/m3 (0.5 ppm) OSHA PEL: C 9 mg/m3 (1 ppm) IDLH 500 mg/m3
Poison Class
4

Fire Fighting Measures

Flash Point
191
Fire Fighting
Carbon dioxide, dry chemical.
Upper exp. limit
3.4
Lower exp. limit
.5
Fire Potential
Slight fire risk when exposed to heat or flame.

Accidental Release Measures

Small spills/leaks
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.

Stability and Reactivity

Incompatibilities
Incompatible with oxidizing agents.
Stability
Stable.
Decomposition
Oxides of carbon.
Combustion Products
Fire may produce irritating and/or toxic gases.

Transport Information

UN Number
1325
Hazard Class
4.1
Packing Group
II; III
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