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Merck

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%

别名:

2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate

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About This Item

线性分子式:
HOC(COOH)(CH2COOH)2 · H2O
CAS号:
分子量:
210.14
Beilstein:
4018641
EC號碼:
MDL號碼:
分類程式碼代碼:
12352100
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent
puriss. p.a.

品質等級

agency

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

化驗

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

形狀

solid

雜質

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

燃燒殘留物

≤0.01% (as SO4)

pKa 

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

負離子痕跡

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

正離子痕跡

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

適合性

complies for appearance of solution
complies for reaction against H2SO4

SMILES 字串

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 密鑰

YASYEJJMZJALEJ-UHFFFAOYSA-N

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相关类别

一般說明

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

應用

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。

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

345.0 °F - closed cup

閃點(°C)

173.9 °C - closed cup

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


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