Chromium potassium sulfate dodecahydrate
99.9% metals basis
Reagent
Code: #161397
Alias
Potassium chromium sulfate, chromium alum, chromium alum, potassium chromium alum
CAS Number
7788-99-0
science Other reagents with same CAS 7788-99-0
blur_circular Chemical Specifications
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Molecular Information
Weight
499.4 g/mol
Formula
CrKO₈S₂·₁₂H₂O
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Registry Numbers
EC Number
233-401-6
MDL Number
MFCD00149917
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Physical Properties
Melting Point
89 °C(lit.)
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Storage & Handling
Density
1.83
Storage
Room temperature
description Product Description
Used in textile dyeing as a mordant to fix dyes on fabrics, especially wool. Helps improve color fastness and durability. Also applied in leather tanning to enhance softness and resistance to bacterial degradation. Historically used in photography as a sensitizer in certain printing processes. In analytical chemistry laboratories, it serves as a reagent for precipitation or as a catalyst in specific reactions. Occasionally used in educational labs for crystal growing experiments due to its ability to form well-defined, deep purple crystals.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Purity (%) | 99.9-100 |
| Total Metallic Impurities | 0-200 |
| Cd by Complexometric EDTA | 48-50.5 |
| Purity (Based on Trace Metal Analysis) | 99.9-100 |
| Water (Karl Fischer) | 19-20 |
| Appearance | Violet Red To Dark Purple Crystalline Powder or Crystals |
| ICP Major Analysis | Confirms Chromium Component |
| X-ray Diffraction | Conforms to Structure |
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