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A6738912

Potassium bromide , Spectral level, ≥99.5% , 7758-02-3

Synonym(s):
Hydrobromic Acid Potassium Salt;Potassium bromide;Potassium bromide solution

CAS NO.:7758-02-3

Empirical Formula: BrK

Molecular Weight: 119

MDL number: MFCD00011358

EINECS: 231-830-3

Pack Size Price Stock Quantity
25G RMB215.20 In Stock
100G RMB639.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 734 °C (lit.)
Boiling point: 1435 °C/1 atm (lit.)
Density  3.119 g/mL at 25 °C(lit.)
vapor density  7.14 (vs air)
vapor pressure  175 mm Hg ( 20 °C)
refractive index  1.559
Flash point: 1435°C
storage temp.  Store at +5°C to +30°C.
solubility  H2O: 1 M at 20 °C, clear, colorless
form  random crystals
Specific Gravity 2.75
color  White
PH 5.0-8.8 (25℃, 50mg/mL in H2O)
Water Solubility  650 g/L (20 ºC)
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck  14,7618
Dielectric constant 4.8700000000000001
Stability: Stable. Incompatible with strong oxidizing agents, strong acids, bromine trifluoride and bromine trichloride.
InChIKey IOLCXVTUBQKXJR-UHFFFAOYSA-M
LogP 1 at 25℃

Description and Uses

Potassium bromide was used as a secondary halide in combination with an iodide in the paper negative processes, the albumen on glass process, and the wet collodion processes. When silver bromide gelatin emulsion was invented, potassium bromide was the primary halide. It was also used in combination with either bichloride of mercury, copper sulfate, or potassium ferricyanide in photographic bleaches and as a restrainer in alkaline developers used for gelatin plates and developing-out papers.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P280-P305+P351+P338-P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38-36
Safety Statements  26-45-61-7/9-39-36
RIDADR  UN 1744 8/PG 1
WGK Germany  2
RTECS  TS7650000
3-10
TSCA  Yes
HS Code  28275100
Toxicity LD50 orally in Rabbit: > 2000 mg/kg

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