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Key Documents

C1909

Sigma-Aldrich

柠檬酸 一水合物

ACS reagent, ≥99.0%

同義詞:

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

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About This Item

線性公式:
HOC(COOH)(CH2COOH)2 · H2O
CAS號碼:
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

品質等級

化驗

≥99.0%

形狀

powder

雜質

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

燃燒殘留物

≤0.02%

pKa 

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

溶解度

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)

負離子痕跡

chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.05%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

正離子痕跡

Fe: ≤3 ppm
Pb: ≤2 ppm

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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一般說明

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ΔsolHm (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。

應用

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。

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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分析證明 (COA)

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存取文件庫

Size dependency of citric acid monohydrate growth kinetics.
Bravi M and Mazzarotta B.
Chemical Engineering Journal, 70(3), 203-207 (1998)
Methods of multilocus enzyme electrophoresis for bacterial population genetics and systematics.
R K Selander et al.
Applied and environmental microbiology, 51(5), 873-884 (1986-05-01)
Michael K Schultz et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 76, 46-54 (2012-10-03)
A new NaCl based method for preparation of gallium-68 labeled radiopharmaceuticals has been adapted for use with an automated gallium-68 generator system. The method was evaluated based on 56 preparations of [(68)Ga]DOTATOC and compared to a similar acetone-based approach. Advantages
S Massberg et al.
The Journal of experimental medicine, 189(8), 1255-1264 (1999-04-20)
Atherosclerotic vascular lesions are considered to be a major cause of ischemic diseases, including myocardial infarction and stroke. Platelet adhesion and aggregation during ischemia-reperfusion are thought to be the initial steps leading to remodeling and reocclusion of the postischemic vasculature.
New perspectives for citric acid production and application.
Soccol CR, et al.
Food Technology and Biotechnology, 44(2), 141-149 (2006)

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