Potassium bromide
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Product Name: Potassium Bromide English Name: Potassium bromide CAS No.: 7758-02-3 Molecular Formula: KBr Molecular Weight: 119 Properties: White crystals, odorless, salty taste, slightly bitter, slightly hygroscopic, specific gravity 2.75 (25/4°C), melting point 734°C, boiling point 1435°C, soluble in water and glycerol, slightly soluble in ethanol, turns yellow upon exposure to light, aqueous solution is neutral. Quality Specifications: (SPECIFICATIONS)
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Item
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Pharmaceutical Grade
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Photographic Grade
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Reagent Grade III
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Industrial Grade
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| Content% ≥ | 99.0 | 99.0 | 98.0 | 98.0 |
| Aqueous Solution Reaction | Qualified passed | Qualified passed | Qualified passed | |
| Chloride (as Cl)% ≤ | 0.2 | 0.5 | 0.5 | 1.0 |
| Sulfate (as SO4)% ≤ | 0.005 | 0.005 | 0.005 | |
| Iron (Fe)% ≤ | 0.0002 | 0.0002 | 0.0002 | 0.005 |
| Bromate (as BrO3)% ≤ | 0.005 | 0.003 | 0.003 | |
| Iodide (as I)% ≤ | Qualified passed | 0.01 | 0.01 | |
| Heavy Metals (as Pb)% ≤ | 0.0002 | 0.0001 | 0.0005 | |
| Arsenic (as As) ≤ | 0.0005 | |||
| Loss on Drying% ≤ Loss on | 0.5 | 0.5 | 0.5 | 1.0 |
| Water Insoluble Matter% ≤ | Qualified | 0.01 | 0.01 | |
| Reference Standard | China Pharmacopeia 1995-CHINA Pharmacopeia | ZBG85001-88 | GB1277-77 | GB1277-77 |
Uses: Industrial grade is used for engraving and lithography; pharmaceutical grade is used as a sedative; photographic grade is used in the production of photographic films, developers, negative additives, toners, and color photo bleaches. Packaging and Storage: Composite bags, cardboard drums Φ30×37(cm) lined with two layers of plastic bags, 25 kg per package. Store in a ventilated, dry place, protect from moisture and light. In case of fire, extinguish with water.
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