NICKEL(II) BROMIDE TRIHYDRATE

Synonym(s):Nickel bromide;Nickel bromide (Br₂ Ni);Nickel dibromide;Nickel dibromide hydrate;Nickelous bromide

CAS NO.：7789-49-3
Empirical Formula: Br2H2NiO
Molecular Weight: 236.52
MDL number: MFCD00149807
EINECS: 677-463-6
SAFETY DATA SHEET (SDS)
Update Date: 2025-01-27 09:38:02

NICKEL(II) BROMIDE TRIHYDRATE Structural

What is NICKEL(II) BROMIDE TRIHYDRATE?

Chemical properties

(1) Brownish-yellow solid or yellow, lustrous scales.(2) Deliquescent, greenish scales; loses 3H2O at 300C. Soluble in water, alcohol, ether, and ammonium hydroxide.

Chemical properties

The green hexahydrate NiBr2-6H2O readily evolves water; crystallization from aqueous solutions above 29° yields the trihydrate NiBr2-3H2O. The hexahydrate can be dehydrated to a dihydrate over concentrated sulphuric acid at 5°. The environment of the nickel atoms in NiBr2-6H20 is 2Br and 4H20 and in NiBr2-2H20 4Br and 2H20 ; in both cases the Ni-Br distance is 2.6 and the Ni-O distance 2.0 ?.

The Uses of NICKEL(II) BROMIDE TRIHYDRATE

It is used in Soporific and sedatives pharmaceutical Industry, Photosensitive industry, Analytical Chemistry, and also electrolyte in high energy battery.

Preparation

Anhydrous NiBr2 is most conveniently prepared by the action of bromine on nickel, either at red heat or in ethereal solution at room temperature74 or by dehydration of the hexahydrate at about 140°. It crystallizes with the CdCl2 type structure, the nickel atoms being surrounded octahedrally by bromine atoms at 2.57 ?.

Hazard

See nickel.

Properties of NICKEL(II) BROMIDE TRIHYDRATE

Melting point:	963 °C(lit.)
Density	5.098 g/mL at 25 °C(lit.)
form	powder
Water Solubility	Soluble in water, alcohol
Sensitive	Hygroscopic
Merck	14,6502
Exposure limits	ACGIH: TWA 0.1 mg/m3 NIOSH: IDLH 10 mg/m3; TWA 0.015 mg/m3
CAS DataBase Reference	7789-49-3(CAS DataBase Reference)

Safety information for NICKEL(II) BROMIDE TRIHYDRATE

Signal word	Danger
Pictogram(s)	Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H317:Sensitisation, Skin H334:Sensitisation, respiratory H341:Germ cell mutagenicity H372:Specific target organ toxicity, repeated exposure H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P202:Do not handle until all safety precautions have been read and understood. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P308+P313:IF exposed or concerned: Get medical advice/attention.