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Merck
CN

179922

邻苯二甲酸氢钾

ACS reagent grade, 99.95-100.05% dry basis, crystals, acidimetric standard

别名:

KHP, 苯二甲酸氢钾, 邻苯二甲酸 单钾盐, 酞酸氢钾

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关于此项目

线性分子式:
HOOCC6H4COOK
化学文摘社编号:
877-24-7
分子量:
204.22
NACRES:
NA.21
PubChem Substance ID:
24850834
UNSPSC Code:
12352100
EC Number:
212-889-4
MDL number:
MFCD00013070
Beilstein/REAXYS Number:
3637128
Assay:
99.95-100.05% dry basis
Grade:
ACS reagent
Form:
crystals
Solubility:
water: soluble (93 g/l at 30 °C (86 °F))

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产品名称

邻苯二甲酸氢钾, ACS reagent, acidimetric standard

InChI key

IWZKICVEHNUQTL-UHFFFAOYSA-M

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

SMILES string

[K+].OC(=O)c1ccccc1C([O-])=O

grade

ACS reagent

assay

99.95-100.05% dry basis

form

crystals

quality

acidimetric standard

impurities

≤0.002% S compounds
≤0.003% Cl compounds
≤0.005% insolubles

pH

4.00-4.02 (25.0 °C±0.2 °C, 0.05 M)

mp

295-300 °C (dec.) (lit.)

solubility

water: soluble (93 g/l at 30 °C (86 °F))

Quality Level

200

anion traces

chlorine and bromine (as Cl-): ≤0.003%
sulfur compounds (as SO42-): ≤0.002%

cation traces

Fe: ≤5 ppm
Na: ≤0.005%
heavy metals: ≤5 ppm (by ICP)

functional group

carboxylic acid

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相关类别

Application

邻苯二甲酸氢钾可用作酸量滴定的一级标准品，也可用于制备用于 pH 校准的邻苯二甲酸氢钾缓冲液。

存储类别

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

387.1 °F - Pensky-Martens closed cup

flash_point_c

197.3 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCZ9604
MKCZ5830
MKCZ5831
MKCX4050
0000370041

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2, 4, 6-Trinitrobenzoic acid as a primary standerd in acidimetry.
Smith GF and Wilkins DH.
Analytica Chimica Acta, 8, 209-216 (1953)
Determination of standard pH values for potassium hydrogen phthalate reference buffer solutions in 10, 20, 50, 64 and 84.2 wt per cent methanol/water mixed solvents at temperatures from 283.15 to 313.15 K.
Mussini T, et al.
Electrochimica Acta, 28(11), 1593-1598 (1983)
J M Padró et al.
Talanta, 107, 95-102 (2013-04-20)
Dispersive ionic liquid-liquid microextraction combined with liquid chromatography and UV detection was used for the determination of two antichagasic drugs in human plasma: nifurtimox and benznidazole. The effects of experimental parameters on extraction efficiency-the type and volume of ionic liquid
Maria Cristina Fossi et al.
Marine pollution bulletin, 64(11), 2374-2379 (2012-09-12)
Baleen whales are potentially exposed to micro-litter ingestion as a result of their filter-feeding activity. However, the impacts of microplastics on baleen whales are largely unknown. In this case study of the Mediterranean fin whale (Balaenoptera physalus), we explore the
Juanjuan Feng et al.
Journal of chromatography. A, 1268, 16-21 (2012-11-07)
Because of the occurrence of ion exchange between high-ionic-strength solution and anions of polymeric ionic liquids (PILs), PILs based solid-phase microextraction (SPME) fibers were rarely used in direct immersion mode to high-salt-added samples. In this work, a novel double-confined PIL
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