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92-52-4

Basic Information
CAS No.: 92-52-4
Name: Biphenyl
Molecular Structure:
Molecular Structure of 92-52-4 (Biphenyl)
Formula: C12H10
Molecular Weight: 154.21
Synonyms: 1,1'-Biphenyl;Dipheny;Biphenyl(8CI);1,1'-Diphenyl;Bibenzene;Carolid AL;Diphenyl;NSC 14916;Phenylbenzene;Tetrosin LY;
EINECS: 202-163-5
Density: 0.997 g/cm3
Melting Point: 68-70 °C(lit.)
Boiling Point: 257.956 °C at 760 mmHg
Flash Point: 105.492 °C
Solubility: insoluble in water
Appearance: white crystals
Hazard Symbols: HarmfulXn, IrritantXi, DangerousN, FlammableF, ToxicT
Risk Codes: 36/37/38-50/53-67-65-62-48/20-11-39/23/24/25-23/24/25
Safety: 23-60-61-62-36/37-33-29-16-9-45
Transport Information: UN 3077 9/PG 3
PSA: 0.00000
LogP: 3.35360
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Consensus Reports

EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory. Community Right-To-Know List.

Standards and Recommendations

OSHA PEL: TWA 0.2 ppm
ACGIH TLV: TWA 0.2 ppm
DFG MAK: 0.16 ppm (1 mg/m3)

Analytical Methods

For occupational chemical analysis use NIOSH: Biphenyl, 2530.

Specification

The Biphenyl , with cas registry number of 92-52-4, has other registry numbers including 56481-93-7, 72931-46-5. It belongs to classification codes which are (1)Agricultural Chemical ; (2)Fungicide, bactericide, wood preservative ; (3)Fungicides, industrial ; (4)Human Data ; (5)Mutation data ; (6)Pesticides ; (7)Skin / Eye Irritant ; (8)TSCA Flag T [Subject to the Section 4 test rule under TSCA] ; (9)Tumor data ; (10)Unspecified / Unclassified pesticide. Its systematic name is called biphenyl . And its IUPAC name is known as 1,1'-biphenyl . This chemical is stable but incompatible with strong oxidising agents. Store it at temperature of 0-6°C.

Physical properties about this chemical are: (1) ACD/LogP: 3.98 ; (2) # of Rule of 5 Violations: 0 ; (3) ACD/LogD (pH 5.5): 3.98 ; (4) ACD/LogD (pH 7.4): 3.98 ; (5) ACD/BCF (pH 5.5): 618.76 ; (6) ACD/BCF (pH 7.4): 618.76 ; (7) ACD/KOC (pH 5.5): 3465.55 ; (8) ACD/KOC (pH 7.4): 3465.55 ; (9) #H bond acceptors: 0 ; (10) #H bond donors: 0 ; (11) #Freely Rotating Bonds: 1 ; (12) Index of Refraction: 1.571; (13) Molar Refractivity: 50.84 cm3 ; (14) Molar Volume: 154.7 cm3 ; (15) Surface Tension: 36.6 dyne/cm; (16) Density: 0.996 g/cm3 ; (17) Flash Point: 105.5 °C ; (18) Enthalpy of Vaporization: 47.55 kJ/mol ; (19) Boiling Point: 258 °C at 760 mmHg ; (20) Vapour Pressure: 0.0227 mmHg at 25°C ; (21) Refractive index: 1.475.

Preparation of Biphenyl : this chemical can be prepared by dibenzothiophene .


This reaction will need reagents N-methyl-3-hydroxypiperidine, NaH, Ni (OAc)2, solvent tetrahydrofuran at temperature 65 ℃. The reaction time is 1.25 hours. The yield is about 95%.

Uses of Biphenyl : (1)it is commonly used as the raw materials for engineering plastics polysulfone which is used to produce trichloro biphenyl, biphenyl pentachlorophenol,and can be used as heat carrier, preservatives, dyes, etc. (2) it can be used to produce other chemicals such as bicyclohexyl .


This reaction occurs at temperature 160 ℃ using reagents MmNi3.5Co0.7Al0.8H4 under reaction pressure 3677.5. The reaction time is 3 hours. The yield is about 95%.

When you are using this chemical, please be cautious about it as the following:
Poison by intravenous route. Moderately toxic by ingestion. A powerful irritant by inhalation in humans. Human systemic effects by inhalation of very small amounts: flaccid paralysis, nausea or vomiting, and other unspecified gastrointestinal effects. Questionable carcinogen with experimental tumorigenic and neoplastigenic data. Mutation data reported. Combustible when exposed to heat or flame; can react with oxidizing materials. To fight fire, use CO2, dry chemical, water spray, mist, fog. When heated to decomposition it emits acrid smoke and fumes.

You can still convert the following datas into molecular structure:
(1)SMILES:c1cc(ccc1)c2ccccc2;
(2)InChI:InChI=1/C12H10/c1-3-7-11(8-4-1)12-9-5-2-6-10-12/h1-10H;
(3)InChIKey:ZUOUZKKEUPVFJK-UHFFFAOYAV

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LD50 oral > 2600mg/kg (2600mg/kg)   "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A166, Pg. 1983,
human TCLo inhalation 4400ug/m3 (4.4mg/m3) PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)

GASTROINTESTINAL: NAUSEA OR VOMITING

GASTROINTESTINAL: OTHER CHANGES
Archives of Environmental Health. Vol. 26, Pg. 70, 1973.
mouse LD50 intravenous 56mg/kg (56mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#00198,
mouse LD50 oral 1900mg/kg (1900mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Shokuhin Eiseigaku Zasshi. Food Hygiene Journal. Vol. 24, Pg. 268, 1983.
rabbit LD50 oral 2400mg/kg (2400mg/kg)   Nagoya Shiritsu Daigaku Igakkai Zasshi. Journal of the Nagoya City University Medical Association. Vol. 28, Pg. 983, 1977.
rabbit LD50 skin > 5010mg/kg (5010mg/kg)   Monsanto Co. Toxicity Information.
rat LC inhalation > 200mg/m3 (200mg/m3)   Monsanto Co. Toxicity Information.
rat LD50 oral 2140mg/kg (2140mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: MUSCLE WEAKNESS

GASTROINTESTINAL: ALTERATION IN GASTRIC SECRETION
National Technical Information Service. Vol. OTS0546109,
rat LD50 unreported 4500mg/kg (4500mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 53(5), Pg. 6, 1988.