Potassium dichromate
SIAL/NIST136F - NIST® SRM® 136f, oxidimetric standard
Synonym: Potassium bichromate
CAS Number: 7778-50-9
Empirical Formula (Hill Notation): Cr2K2O7
Molecular Weight: 294.18
MDL Number: MFCD00011367
Linear Formula: K2Cr2O7
Product Type: Chemical
| format | neat |
| grade | certified reference material |
| InChI | 1S/2Cr.2K.7O/q;;2*+1;;;;; |
| InChI key | KMUONIBRACKNSN-UHFFFAOYSA |
| manufacturer/tradename | NIST® |
| mp | 398 °C (lit.) |
| packaging | pkg of 60 g |
| Quality Level | 100  |
| SMILES string | [K+].[K+].[O-][Cr](=O)(=O |
| technique(s) | titration: suitable |
| Application: | This Standard Reference Material (SRM 136F) is intended for use as a primary oxidimetric standard. |
| General description: | This Standard Reference Material (SRM) is certified as a chemical of known assay for use as a primary oxidimetric standard. A unit of SRM 136F consists of 60 g of highly purified potassium dichromate (K2Cr2O7) in a clear glass bottle. The certification of SRM 136f is valid, within the measurement uncertainties specified, provided the SRM is handled and stored in accordance with the instructions given under “Instructions for Use” in the certificate. SRM 136F_CERT  SRM 136F_SDS |
| Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
| Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
| Other Notes: | Certified for the analytes listed below. Potassium Dichromate (K2Cr2O7) See certificate for values and more details at nist.gov/SRM. |
| Symbol |      GHS03,GHS05,GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H272 - H301 - H312 - H314 - H317 - H330 - H334 - H335 - H340 - H350 - H360FD - H372 - H410 |
| Precautionary statements | P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| RIDADR | UN3086 - class 6.1 - PG 2 - EHS - RQ -Toxic solids, oxidizing, n |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 398 °C (lit.) |
| UNSPSC | 41116107 |