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NIST136F

Potassium dichromate

NIST® SRM® 136f, oxidimetric standard

Synonyme(s) :

Potassium bichromate

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About This Item

Formule linéaire :
K2Cr2O7
Numéro CAS:
7778-50-9
Poids moléculaire :
294.18
Numéro MDL:
MFCD00011367
Code UNSPSC :
41116107
ID de substance PubChem :
329818704
Nomenclature NACRES :
NA.24

1 630,00 $

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Qualité

certified reference material

Niveau de qualité

100

Conditionnement

pkg of 60 g

Fabricant/nom de marque

NIST®

Technique(s)

titration: suitable

Pf

398 °C (lit.)

Format

neat

Chaîne SMILES 

[K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O

InChI

1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1

Clé InChI

KMUONIBRACKNSN-UHFFFAOYSA-N

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Catégories apparentées

Description générale

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

Application

This Standard Reference Material (SRM 136F) is intended for use as a primary oxidimetric standard.

Autres remarques

Certified for the analytes listed below.
Potassium Dichromate (K2Cr2O7)

See certificate for values and more details at nist.gov/SRM.

Informations légales

NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Mention d'avertissement

Danger

Classification des risques

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

Organes cibles

Cardio-vascular system, Respiratory system

Code de la classe de stockage

5.1B - Oxidizing hazardous materials

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Certificats d'analyse (COA)

Lot/Batch Number

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Questions

1–4 of 4 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. What does the "3110" lot number signify in the system?

    1 answer

    1. The "3110" lot number is used as a placeholder in the system when an actual lot number is not available.
      In this particular instance, the way NIST numbers their lots does not align well with the lot numbering convention in SAP. NIST incorporates the lot identification within their product numbers. For example, for the product NIST136F, the lot is identified as "F", succeeding the previous lot "E". As new lots are released by NIST, a new product number is assigned, such as NIST136G for the subsequent lot, and the pattern continues accordingly.

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  4. 1. How can one locate a Certificate of Analysis (COA) for a NIST standard? 2. Are lot numbers assigned to NIST Standards?

    1. How can one locate a Certificate of Analysis (COA) for a NIST standard?
    2. Are lot numbers assigned to NIST Standards?

    1 answer

    1. 1) You can find certificates and other product information on NIST’s website: https://shop.nist.gov/

      Remove "NIST" prefix from our product number when searching on the NIST website (e.g. “136F” instead of “NIST136F”)

      2) No, NIST does not have lot numbers, and instead the product number is changed.

      NIST lots are denoted in their product numbers. Take NIST136F for example. The current lot is “F”, whereas NIST136E came before it. When NIST releases a new lot for Product 136, we will create a new product number, NIST136G, and so on.

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