| Identification | More | [Name]
SILVER BROMIDE | [CAS]
7785-23-1 | [Synonyms]
SILVER BROMIDE
SILVER(I) BROMIDE
AgBr
Silver brohide
Silver bromide (AgBr)
silverbromide(agbr)
SILVER BROMIDE 99.999%
Silverbromide,Premion,99.999%(metalsbasis)
SILVER BROMIDE PURIFIED
Silverbromide(99.9%-Ag)
silver bromide, premion
SILVERBROMIDE,GRANULAR,PURIFIED
SILVER BROMIDE: 99.9%
Silver bromide, Premion(R), 99.998% (metals basis) | [EINECS(EC#)]
232-076-8 | [Molecular Formula]
AgBr | [MDL Number]
MFCD00003398 | [Molecular Weight]
187.77 | [MOL File]
7785-23-1.mol |
| Chemical Properties | Back Directory | [Appearance]
Pale Yellow Powder | [Melting point ]
432 °C (lit.) | [Boiling point ]
700 °C
| [density ]
6.473 g/mL at 25 °C(lit.)
| [storage temp. ]
Room Temperature | [solubility ]
insoluble in H2O, acid solutions, ethanol | [form ]
Powder | [color ]
Pale Yellow | [Specific Gravity]
6.473 | [Stability:]
Stability Darkens in light | [Water Solubility ]
soluble in alkali cyanide solutions. Partially soluble in ammonia. Insoluble in alcohol and acids. Practically insoluble in water. | [Crystal Structure]
Cubic, Sphalerite Structure - Space Group F(-4)3m | [Sensitive ]
Light Sensitive | [Merck ]
14,8506 | [Solubility Product Constant (Ksp)]
pKsp: 12.3（25°C） | [Dielectric constant]
12.2（0.0℃） | [InChIKey]
ADZWSOLPGZMUMY-UHFFFAOYSA-M | [Uses]
A yellowish powder made by the combination of any soluble
bromide with silver nitrate. Silver bromide could also be
formed by exposing metallic silver to the fumes of bromine
as in the daguerreotype process. It is soluble in sodium thiosulfate,
potassium bromide, and potassium cyanide solutions.
Silver bromides were secondary halides for the paper negative
processes, albumen negative process, and wet or preserved
collodion processes. Silver bromides were the primary halides
for the silver bromide collodion emulsion negative and the
silver bromide gelatin emulsion processes. Silver bromide is
the most photosensitive silver halide. | [CAS DataBase Reference]
7785-23-1(CAS DataBase Reference) | [EPA Substance Registry System]
Silver bromide (AgBr) (7785-23-1) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
3
| [F ]
8 | [Hazard Note ]
Irritant | [TSCA ]
Yes | [HazardClass ]
9 | [HS Code ]
2843290000 |
| Hazard Information | Back Directory | [Chemical Properties]
Silver bromide, AgBr, is pale yellow crystals or powder, that darken on exposure to light, finally turning black and soluble in potassium bromide, potassium cyanide, and sodium thiosulfate solutions, only very slightly soluble in ammonia water, insoluble in water, and light sensitive. Derivation is through silver nitrate dissolving in water and a solution ofalkali bromide added slowly. The precipitated silver bromide is washed repeatedly with hotwater. The operation must be carried on in a darkroom under a ruby-red light. Used in photographic film and plates, photochromic glass and as a laboratory reagent.
| [Physical properties]
Yellow cubic crystals or powder; refractive index 2.253; darkens on exposure to light; Mohs hardness 2.5; density 6.47g/cm3; melts at 432°C; vaporizes at 1,502°C; insoluble in water, alcohol, and most acids; slightly soluble in dilute ammonia and ammonium carbonate solutions; sparingly soluble in concentrated ammonia solution (0.33 g/100mL 10% ammonia solution at 12°C);soluble in alkali cyanide solutions. | [Preparation]
Silver bromide is prepared by double decomposition reaction. An aqueous solution of alkali bromide, such as sodium or potassium bromide, is slowly added to an aqueous solution of silver nitrate:
Ag+ (aq) + Brˉ (aq) → AgBr(s)
The precipitate is washed repeatedly with hot water. Preparation should be in a dark room under a ruby red light. | [Flammability and Explosibility]
Nonflammable | [Purification Methods]
It is insoluble in dilute HNO3 or dilute NH3 but is soluble in conc NH3. Store it in the dark. |
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