Potassium Dichromate
CAS 7778-50-9·K₂Cr₂O₇
Primary-standard dichromate, and the 0.25 N digestion solution used for chemical oxygen demand.
Grades offered
- EXTRA PUREExtra PureThe general-purpose tier on most Indian catalogues.
- ARAnalytical ReagentHigh purity with certified assay and stated trace-impurity limits.
- AR/ACSAnalytical Reagent, ACS specificationAR grade additionally meeting American Chemical Society limits.
Typical applications
- COD determination
- Primary standard for thiosulphate standardisation
- Dichromatometric titration
Potassium Dichromate
K₂Cr₂O₇ · M.W. 294.18 g/mol
- CAS
- 7778-50-9
- Assay
- ≥ 99.9%
- Batch
- Use before
Controlled supply
Hexavalent chromium — carcinogenic, mutagenic and reprotoxic. Requires engineered containment and a documented chromium waste stream. Supplied to institutional laboratories only.
Enquire on WhatsAppOther ways to reach usPack sizes
- 500 g
- 5 kgOn request
Identification
| CAS number | 7778-50-9 |
|---|---|
| Molecular formula | K₂Cr₂O₇ |
| Molecular weight | 294.18 g/mol |
| Assay | ≥ 99.9% |
Hazard identification
Signal wordDanger
- OxidisingGHS03
- CorrosiveGHS05
- Acute toxicityGHS06
- Serious health hazardGHS08
- Hazardous to the environmentGHS09
- H272May intensify fire; oxidiser
- H301Toxic if swallowed
- H317May cause an allergic skin reaction
- H330Fatal if inhaled
- H340May cause genetic defects
- H350May cause cancer
- H360FDMay damage fertility and the unborn child
- H410Very toxic to aquatic life with long lasting effects
TransportUN3087Packing groupII
Controlled supply
Hexavalent chromium — carcinogenic, mutagenic and reprotoxic. Requires engineered containment and a documented chromium waste stream. Supplied to institutional laboratories only.Related products
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