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About This Item
Linear Formula:
K2Cr2O7
CAS Number:
Molecular Weight:
294.18
NACRES:
NA.24
PubChem Substance ID:
UNSPSC Code:
41116107
MDL number:
eCl@ss:
25140904
grade
certified reference material
packaging
pkg of 60 g
manufacturer/tradename
NIST®
technique(s)
titration: suitable
mp
398 °C (lit.)
format
neat
SMILES string
[K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O
InChI
1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1
InChI key
KMUONIBRACKNSN-UHFFFAOYSA-N
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
SRM 136F_CERT
SRM 136F_SDS
This compound is listed in the SVHC (Substances of very high concern) candidate list of ECHA (European Chemicals Agency)
Application
This Standard Reference Material (SRM 136F) is intended for use as a primary oxidimetric standard.
Other Notes
Certified for the analytes listed below.
Potassium Dichromate (K2Cr2O7)
See certificate for values and more details at nist.gov/SRM.
Potassium Dichromate (K2Cr2O7)
See certificate for values and more details at nist.gov/SRM.
Legal Information
NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology
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Signal Word
Danger
Precautionary Statements
Hazard Classifications
Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation - STOT SE 3
Target Organs
Cardio-vascular system, Respiratory system
Storage Class
5.1B - Oxidizing hazardous materials
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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