コンテンツへスキップ
Merck

1.01965

Supelco

Potassium hydrogen phthalate

certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 4.00₅ (25°C) Certipur®

別名:

Potassium hydrogen phthalate, KHP, Monopotassium phthalate, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium phthalate monobasic

ログイン組織・契約価格を表示する


About This Item

実験式(ヒル表記法):
C8H5KO4
CAS番号:
分子量:
204.22
MDL番号:
UNSPSCコード:
41116107
EC Index Number:
212-889-4
NACRES:
NA.24

グレード

certified reference material

品質水準

認証

complies with DIN 19266

製品種目

Certipur®

有効性

>3200 mg/kg LD50, oral (Rat)

pH

4.0 (20 °C, 50 g/L in H2O)

mp

295-300 °C

溶解性

80 g/L

密度

1.636 g/cm3

かさ密度

900 kg/m3

アプリケーション

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

フォーマット

neat

保管温度

15-25°C

InChI

1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1

InChI Key

IWZKICVEHNUQTL-UHFFFAOYSA-M

詳細

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 ISO 17034 accredited calibration laboratories against certified primary standard reference materials (SRM) in compliance with DIN 19266, IUPAC, NIST, Ph. Eur and USP. 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.

アプリケーション

Potassium hydrogen phthalate [KHP; pH(S) = 4.005 (25 °C)] is a certified secondary standard reference material used as a calibration buffer standard for pH instruments or pH electrodes.

特徴および利点

  • The product is delivered with a comprehensive, batch-specific Certificate of Analysis showing the relevant data for the quality management system.
  • The pH value of this Certipur® buffer solution is qualified using differential potentiometry with two platinum hydrogen electrodes against NIST & PTB primary reference materials [pH(S) = 4.005 (25 °C)].
  • This buffer standard has a guaranteed shelf life of 4 years.
  • Potassium hydrogen phthalate buffer is a Certified Reference Material (CRM) offered in neat format. Solution of this standard can be prepared in-house per instructions in European Pharmacopoeia (Ph. Eur. 2.2.3).
  • Intended for extremely precise calibration, qualification and monitoring of pH instruments and routine assessment of their performance.

法的情報

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

保管分類コード

13 - Non Combustible Solids

WGK

WGK 1

引火点(°F)

387.1 °F - Pensky-Martens closed cup

引火点(℃)

197.3 °C - Pensky-Martens closed cup


試験成績書(COA)

製品のロット番号・バッチ番号を入力して、試験成績書(COA) を検索できます。ロット番号・バッチ番号は、製品ラベルに「Lot」または「Batch」に続いて記載されています。

以前この製品を購入いただいたことがある場合

文書ライブラリで、最近購入した製品の文書を検索できます。

文書ライブラリにアクセスする

この製品を見ている人はこちらもチェック

ライフサイエンス、有機合成、材料科学、クロマトグラフィー、分析など、あらゆる分野の研究に経験のあるメンバーがおります。.

製品に関するお問い合わせはこちら(テクニカルサービス)