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33114

Sigma-Aldrich

柠檬酸 一水合物

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, 99.5-102%

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别名:
2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate
线性分子式:
HOC(COOH)(CH2COOH)2 · H2O
CAS号:
5949-29-1
分子量:
210.14
Beilstein:
4018641
EC 号:
201-069-1
MDL编号:
MFCD00149972
UNSPSC代码:
12352100
PubChem化学物质编号:
57648756
NACRES:
NA.21

等级

ACS reagent
puriss. p.a.

质量水平

200

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

检测方案

99.5-100.5% (calc. on anhydrous substance)
99.5-102%

形式

solid

杂质

≤0.005% insolubles in water
≤2 ppm heavy metals (as Pb)
7.5-9.0% water (Karl Fischer)

灼烧残渣

≤0.01% (as SO4)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

痕量阴离子

chloride (Cl-): ≤5 mg/kg
oxalate (C2O42-): ≤50 ppm
phosphate (PO43-): ≤10 mg/kg
sulfate (SO42-): ≤20 ppm

痕量阳离子

Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤3 ppm
Pb: ≤2 ppm
Zn: ≤5 mg/kg

适用性

complies for appearance of solution
complies for reaction against H2SO4

SMILES字符串

OC(CC(O)(C(O)=O)CC(O)=O)=O.O

InChI

1S/C6H8O7.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);1H2

InChI key

YASYEJJMZJALEJ-UHFFFAOYSA-N

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相关类别

一般描述

柠檬酸一水合物是一种有机酸。据报道，它在水中的溶液摩尔焓是 ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061 ± 123)Jmol-1。

应用

柠檬酸一水合物可用于制备生物实验方案中的柠檬酸三钾缓冲液 和Otto I分离缓冲液。 它还可用于改善熔融挤出的基质片剂中盐酸地尔硫的释放。

象形图

Exclamation mark
GHS07

警示用语：

Warning

危险声明

H319,H335

危险分类

Eye Irrit. 2 - STOT SE 3

靶器官

Respiratory system

WGK

WGK 1

闪点(°F)

345.0 °F

闪点(°C)

173.9 °C

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves

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