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C1909

柠檬酸一水合物

Name: 柠檬酸 一水合物
Brand: SIAL

ACS reagent grade, ≥99.0%, powder

别名:

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

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关于此项目

线性分子式:

HOC(COOH)(CH₂COOH)₂ · H₂O

化学文摘社编号:

5949-29-1

分子量:

210.14

NACRES:

NA.21

PubChem Substance ID:

24892446

UNSPSC Code:

12352100

EC Number:

201-069-1

MDL number:

MFCD00149972

Beilstein/REAXYS Number:

4018641

Assay:

≥99.0%

Form:

powder

Grade:

ACS reagent

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产品名称

柠檬酸一水合物, ACS reagent, ≥99.0%

grade

ACS reagent

Quality Level

200

assay

≥99.0%

form

powder

impurities

Substances carbonizable by hot sulfuric acid, passes test, ≤0.005% Insoluble matter

ign. residue

≤0.02%

pH

(1.8 at 50 g/l at 20 °C)

pKa

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

solubility

H₂O: soluble 54 % (w/w) at 10 °C (Citric acid in water), H₂O: 59.2 % (w/w) at 20 °C (Citric acid in water), H₂O: 84.0 % (w/w) at 100 °C (Citric acid in water)

anion traces

chloride (Cl^-): ≤0.001%, oxalate (C₂O₄^2-): passes test (limit about 0.05%), phosphate (PO₄^3-): ≤0.001%, sulfate (SO₄^2-): ≤0.002%

cation traces

Fe: ≤3 ppm, Pb: ≤2 ppm

functional group

carboxylic acid

SMILES string

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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General description

柠檬酸一水合物是一种有机酸。据报道，其水溶液的摩尔焓为Δ_solH_m(298.15K， m = 0.0203molkg^-1) = (29061±123)Jmol^-1。它可以通过在柠檬酸合成期间在20-25°C下从柠檬酸溶液母液中结晶而制得。对其晶体生长动力学的研究表明，生长与尺寸呈线性相关。

一水柠檬酸是一种有机弱酸，在食品和饮料产品中用作天然防腐剂。

Application

使用柠檬酸一水合物制备的柠檬酸溶液可用于丙酮法 ⁶⁸Ga预纯化和放射性标记技术。
柠檬酸一水合物可用作

释放改良剂，用于改善熔体挤出Eudragit RS PO片剂中盐酸地尔硫卓的释放。
配制柠檬酸盐缓冲液，以便制备用于活体显微镜分析的血小板。
制备Tris-柠檬酸盐缓冲液，以用于细菌酶电泳。

pictograms

GHS07

signalword

Warning

hcodes

H319,H335

pcodes

P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

345.0 °F - closed cup

flash_point_c

173.9 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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