MilliporeSigma
All Photos(1)

Documents

1.01963

Supelco

Potassium hydrogen tartrate

certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 3.63₉ / pH(S) = 3.55₇ (25°C) Certipur®

Sign Into View Organizational & Contract Pricing

Synonym(s):
Potassium hydrogen tartrate, KHT, Monopotassium tartrate, Potassium Bitartrate, Potassium acid tartrate
Empirical Formula (Hill Notation):
C4H5KO6
CAS Number:
Molecular Weight:
188.18
MDL number:
EC Index Number:
212-769-1

grade

certified reference material

Quality Level

Agency

complies with DIN 19266

product line

Certipur®

pH

3.4-3.7 (20 °C in H2O, saturated solution)

mp

250 °C (decomposition)

solubility

5.7 g/L

bulk density

720 kg/m3

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

format

neat

storage temp.

15-25°C

InChI

1S/C4H6O6.K/c5-1(3(7)8)2(6)4(9)10;/h1-2,5-6H,(H,7,8)(H,9,10);/q;+1/p-1/t1-,2-;/m1./s1

InChI key

KYKNRZGSIGMXFH-ZVGUSBNCSA-M

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
24353115498401.01965
Potassium bitartrate United States Pharmacopeia (USP) Reference Standard

USP

1549840

Potassium bitartrate

product line

Certipur®

product line

-

product line

-

product line

Certipur®

mp

250 °C (decomposition)

mp

-

mp

-

mp

295-300 °C

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

application(s)

-

application(s)

pharmaceutical (small molecule)

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

format

neat

format

-

format

neat

format

neat

agency

complies with DIN 19266

agency

-

agency

-

agency

complies with DIN 19266

General description

Certipur® certified secondary standard reference buffers are used to precisely calibrate and monitor pH measurement instruments and buffer solutions. They are quality controlled and qualified in our ISO/IEC 17025 and 17034 accredited calibration laboratories against certified primary standard reference materials (SRM) in compliance with DIN 19266, IUPAC, NIST and Ph. Eur. Certipur® reference materials offer maximum accuracy, reliability and convenience and help avoid costly repeat analyses.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

Potassium hydrogen tartrate [pH(S) = 3.639 / pH(S) = 3.557 (25 °C)] is a certified secondary standard reference buffer used as a calibration buffer standard for pH instruments or pH electrodes.

Features and Benefits

  • The product is delivered with a comprehensive, batch-specific Certificate of Analysis showing relevant data for the quality management system.
  • The pH value of this Certipur® buffer solution is measured using differential potentiometry with two platinum hydrogen electrodes against NIST & PTB primary SRMs [pH(S) = 3.639 / pH(S) = 3.557 (25 °C)].
  • It is a Certified Reference Material (CRM) offered in neat format.
  • Intended for extremely precise calibration, qualification and monitoring of pH instruments and for testing other buffer solutions.

Analysis Note

pH-value (25 °C): 3.634 - 3.640
Identity: passes test

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

410.0 °F

Flash Point(C)

210 °C


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 1

1 of 1

D-(+)-Glucose ≥99.5% (GC)

Sigma-Aldrich

G8270

D-(+)-Glucose

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service