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邻苯二甲酸氢钾,Potassium hydrogen phthalate [KHP];puriss. p.a., buffer substance, ≥99.5%

别名:苯二甲酸氢钾;邻苯二甲酸单钾盐;酞酸氢钾;KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate, Potassium phthalate monobasic

线性分子式: HOOCC6H4COOK CAS号: 877-24-7 分子量: 204.22 Beilstein: 3637128 EC 号: 212-889-4 MDL编号: MFCD00013070 PubChem化学物质编号: 57648795 NACRES: NA.21
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 33325
CAS号: 877-24-7
MDL号: MFCD00013070
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说明

一般描述

Potassium phthalate monobasic is the monopotassium salt of phthalic acid. It has been proposed as a certified reference material (CRM) under ISO/IEC 17025 and ISO Guide 34 accreditation. Its spectral shift, multiplicity, solubility and relaxation times in different solvents have been reported.
 

应用

Potassium phthalate monobasic may be used as a buffer to maintain pH = 2.39 and 4.52, during the dispersive ionic liquid-liquid microextraction coupled with liquid chromatography and UV detection of drug (benznidazole and nifurtimox) levels in human plasma. It has been used as internal standard certified reference material (CRM) for the high performance (HP)-quantitative NMR spectroscopic (qNMR) determination of various organic compounds.
 
 

属性

等级

puriss. p.a.

测定

≥99.5%

缺失

≤0.2% loss on drying, 105 °C

pH值(酸碱度)

4

mp

295-300 °C (dec.) (lit.)

痕量阴离子

chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg

痕量阳离子

Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

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

 

安全信息

Storage Class Code

13 - Non Combustible Solids

WGK Germany

WGK 3

闪点(F)

387.1 °F - Pensky-Martens closed cup

闪点(C)

197.3 °C - Pensky-Martens closed cup

个人防护装备

Eyeshields, Gloves, type N95 (US)

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 99 | 欧洲Eur. ≥ 10 | 東京Tokyo ≥ 22 | 香港与北京 ≥ 32
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