Merck
CN
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文件

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®

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别名:
Potassium hydrogen tartrate, KHT, Monopotassium tartrate, Potassium Bitartrate, Potassium acid tartrate
经验公式（希尔记法）:
C4H5KO6
CAS号:
868-14-4
分子量:
188.18
MDL编号:
MFCD00065392
EC索引号:
212-769-1

等级

certified reference material

质量水平

300

Agency

complies with DIN 19266

产品线

Certipur®

pH值（酸碱度）

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

mp

250 °C (decomposition)

溶解性

5.7 g/L

堆积密度

720 kg/m3

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

格式

neat

储存温度

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

相关类别

一般描述

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.

应用

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.

特点和优势

  • 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.

分析说明

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

法律信息

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

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

410.0 °F

闪点(°C)

210 °C

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