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【 Molecular formula 】Na2Cr2O7
【 Molecular weight】 262.02
【 CAS NO.】10588-01-9
【 Character 】 This product is bright orange red monoclinic acicular or small granular crystal. It is easy to deliquesce in air and dissolve in water to form orange solution. Its aqueous solution is acidic. In acidic medium, sodium dichromate is a strong oxidant.
【 Use 】It is mainly used to manufacture chromic anhydride, chrome yellow pigment and other chromium salts. It is also used in tanning, textile, electroplating, medicine, oil, dye, drilling, wood anti-corrosion and other industries.
【 Package】40kg high-strength composite bag or plastic woven bag lined with plastic bag.
【 Notes 】Do not mix with food or strong reducing agent; During storage and transportation, pay attention to moisture-proof, heat proof, shock proof and keep away from inflammables.
【 Executive criteria】 GB/T1611-2014
Indication name | Index (%) | ||
Superior products (%) | First class (%) | Qualified products (%) | |
Chromic anhydride (CrO3) | ≥99.8% | ≥99.6% | ≥99.2% |
Sulfate (SO42-) | ≤0.05% | ≤0.10% | ≤0.20% |
Sodium (Na) | ≤0.04% | / | / |
Turbidity (NTU) | ≤5% | ≤15% | / |
Water insoluble matter | ≤0.01% | ≤0.03% | ≤0.05% |
Manufacturing
