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Potassium dichromate, secondary standard for volumetric titrations, Titrasure®

- Synonyms: Potassium bichromate, Potassium pyrochromate
- K2Cr2O7
- M = 294,19 g/mol
- CAS [7778-50-9]
- EINECS-No.: 231-906-6
- Solub. in water: (20 ºC): 130 g/l
- Melting point: 398 ºC
- Boiling point: > 500 ºC
- LD 50 (oral, rat): 25 mg/kg
- EC-Index-No.: 024-002-00-6
- ADR: 6.1 T5 II UN 3288
- IMDG: 6.1 II UN 3288
- IATA/ICAO: 6.1 II UN 3288
- GHS-signal word: Danger
- GHS-H sentences: H272 - H301 - H330 - H334 - H340 - H350 - H360FD - H372 - H314 - H400 - H410 - H312 - H317
- GHS-P sentences: P221 - P301+P310 - P303+P361+P353 - P305+P351+P338 - P320 - P370+P378 - P405 - P501a
- Tariff number: 2841 50 00 00
- Applications: oxidizing agent, synthesis of organic products, manufacture of dyes, painting.
- Appearance: Orange solid

SPECIFICATIONS
assay (on dried sample): min. 99,0 %
insoluble in water: max. 0,005 %
chlorides (Cl): max. 0,001 %
sulfates (SO4): max. 0,005 %
calcium (Ca): max. 0,003 %
iron (Fe): max. 0,001 %
sodium (Na): max. 0,02 %
loss on drying (105 ºC): max. 0,05 %

This standard solution is traceable to Standard Reference Material from NIST.