Government Regulation Cas:7726-95-6

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Product Description:

Product Name: Government regulation CAS NO: 7726-95-6

 

Synonyms:             

Bromine;

Dibromine;

 

Chemical & Physical Properties:

Appearance: Dark red liquid or reddish-brown gas

Assay :≥98.0%

Density: 3.119

Boiling Point: 58.7℃

Melting Point: -7.2℃

Flash Point: 113℃

Refractive Index: 1.55

Water Solubility: 35 g/L (20 ℃)

Stability: Stable. Incompatible with reducing agents, alkali metals, powdered metals, steel, iron, copper, organic materials.

Storage Condition: 2-8℃

Vapor Density: 7.14 (vs air)

Vapor Pressure: 175 mm Hg ( 20 ℃)

 

Safety Information:

RTECS: EF9100000

Hazard Class: 8

Safety Statements: S26-S45-S61-S7/9

HS Code: 2801302000

Packing Group: I

WGK Germany: 2

RIDADR: UN 1744

Risk Statements: R26; R35; R50

Hazard Codes: T+; C; N

Caution Statement: P260; P273; P280; P284; P305 + P351 + P338; P310

Symbol: GHS05, GHS06, GHS09

Hazard Declaration: H314; H330; H400

Signal Word: Danger

 

Bromine (from AncientGreek: βρῶμος, brómos, meaning ”stench”) is a chemical element with symbol Br and atomic number 35. It is a halogen. The element was isolated independently by two chemists, Carl Jacob Löwig (in 1825) and Antoine Jérôme Balard (in 1826). Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, with properties between those of chlorine and iodine. Bromine does not occur free in nature, but in colorless soluble crystalline mineral halide salts, analogous to table salt.

Bromine is rarer than about three-quarters of elements in the Earth”s crust. The high solubility of bromide ions has caused its accumulation in the oceans, and commercially the element is easily extracted from brine pools, mostly in the United States, Israel and China. At high temperatures, organobromine compounds readily convert to free bromine atoms, a process which has the effect of stopping free radical chemical chain reactions. This effect makes organobromine compounds useful as fire retardants; more than half the bromine produced industrially worldwide each year is put to this use. Unfortunately, the same property causes sunlight to convert volatile organobromine compounds to free bromine atoms in the atmosphere, and an unwanted side effect of this process is ozone depletion. As a result, many organobromide compounds that were formerly in common use—such as the pesticide, methyl bromide—have been abandoned. Bromine compounds are still used for purposes such as in well drilling fluids, in photographic film, and as an intermediate in the manufacture of organic chemicals.

 

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