??? ??

??? MSDS

Phenylbenzene

??? C??? ??, ??, ??

??

Biphenyl, also called diphenyl, consists of two benzene rings joined by a single bond. It exists as colorless to yellowish crystals, has a distinctive odor, and occurs naturally in oil, natural gas, and coal tar.

??? ??

1,1'-Biphenyl is a clear colorless liquid with a pleasant odor and stable organic compound. It is combustible at high temperatures, producing carbon dioxide and water when combustion is complete. Partial combustion produces carbon monoxide, smoke, soot, and low molecular weight hydrocarbons. It is used extensively in the production of heat-transfer fl uids, for example, as an intermediate for polychlorinated biphenyls, and dye carriers for textile dyeing. It is also used as a mold retardant in citrus fruit wrappers, in the formation of plastics, optical brighteners, and hydraulic fluids.

??? ??

White scales with a pleasant but peculiar odor. Odor threshold concentration is 0.83 ppb (quoted, Amoore and Hautala, 1983).

??

Reported found in coal tar, bilberry, carrots, peas, potato, bell pepper, rum, cocoa, tomato, coffee, roasted peanuts, olive (Olea europae), buckwheat and tamarind (Tamarindus indica L).

??

Biphenyl is used as an antifungal agent to preserve citrus fruit, in citrus wrappers to retard mold growth, in heat transfer fluids, in dye carriers for textiles and copying paper, as a solvent in pharmaceutical production, in optical brighteners, and as an intermediate for the production of a wide range of organic compounds.

?? ??

By thermal dehydrogenation of benzene.

??

ChEBI: A benzenoid aromatic compound that consists of two benzene rings connected by a single covalent bond. Biphenyl occurs naturally in coal tar, crude oil, and natural gas. Formerly used as a fungicide for citrus crops.

?? ??

A clear colorless liquid with a pleasant odor. Flash point 180°F. Insoluble in water. Vapors are heavier than air. Used to manufacture other chemicals and as a fungicide.

??? ?? ??

Insoluble in water.

?? ???

Biphenyl is incompatible with oxidizers.

????

Exposures to 1,1’-biphenyl cause acute effects with symptoms that include, but are not limited to, polyuria, accelerated breathing, lacrimation, anorexia, weight loss, muscular weakness, coma, fatty liver cell degeneration, and severe nephrotic lesions. Exposure to biphenyl fumes for short periods of time causes nausea, vomiting, irritation of the eyes and respiratory tract, and bronchitis. Breathing small amounts of 1,1’-biphenyl over long periods of time causes damage to the liver and the nervous system of exposed workers. Breathing the mists, vapors, or fumes may irritate the nose, throat, and lungs. Depending on the concentration and duration of exposure, the symptoms include, but are not limited to, sore throat, coughing, labored breathing, sneezing, a burning sensation, and the effects of CNS depression. Symptoms may include headache, excitation, euphoria, dizziness, incoordination, drowsiness, light-headedness, blurred vision, fatigue, tremors, convulsions, loss of consciousness, coma, respiratory arrest, and death, depending on the concentration and duration of exposure

????

Combustible. Emits toxic fumes under fire conditions.

Safety Profile

Poison by intravenous route.Moderately toxic by ingestion. A powerful irritant byinhalation in humans. Human systemic effects byinhalation of very small amounts: flaccid paralysis, nauseaor vomiting, and other unspecified gastrointestinal effects.Que

??? ??

Biphenyl is a fungicide (pesticide). It is also used as a heat transfer agent, dye carrier, and as an intermediate in organic synthesis.

?? ?? ??

Biphenyl is a stable compound. It has a restricted use as a fungistat applied to citrus packing material. This has generated studies on its toxicity and metabolism in mammals and residue studies in stored fruit. Only limited information on its environmental fate has been published.

??

1,1’-Biphenyl should be kept stored in tightly closed containers in a cool, dry, isolated, and properly ventilated area, away from heat, sources of ignition, incompatibles, and contact with strong oxidizers.

?? ??

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1—Poisonous materials, Technical Name Required.

Purification Methods

Crystallise biphenyl from EtOH, MeOH, aqueous MeOH, pet ether (b 40-60o) or glacial acetic acid. Free it from polar impurities by passage through an alumina column in *benzene, followed by evaporation. The residue has been purified by distillation in a vacuum and by zone refining. Treatment with maleic anhydride removes anthracene-like impurities. It has been recrystallised from EtOH followed by repeated vacuum sublimation and passage through a zone refiner. [Taliani & Bree J Phys Chem 88 2351 1984, Beilstein 5 H 576, 5 I 271, 5 II 479, 5 III 1726, 5 IV 1807.]

? ???

Mist may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.

??? ??

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

?? ??

Occupational workers should be careful during use and chemical management because the fi nely dispersed particles of 1,1’-biphenyl form explosive mixtures in air

??? ?? ?? ? ???

???

?? ??

??? ?? ??

???	??	???	??	?? ?	??
Dalian Richfortune Chemicals Co., Ltd	+86-86-411-84820922 +86-8613904096939	sales@richfortunechem.com	China	305	57
Hebei Chuanghai Biotechnology Co., Ltd	+86-15350571055	Sibel@chuanghaibio.com	China	8738	58
Hebei Yanxi Chemical Co., Ltd.	+86-17531190177	faithe@yan-xi.com	China	5853	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20120	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21585	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8618017249410	jack.li@time-chemicals.com	China	1803	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2988	55
Xiamen AmoyChem Co., Ltd	+86-86-5926051114	sales@amoychem.com	China	6366	58
Shanghai Longyu Biotechnology Co., Ltd.	+8615821988213	info@longyupharma.com	China	2430	58

??? ?? ??: