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About This Item
Linear Formula:
HOC(COOH)(CH2COOH)2 · H2O
CAS Number:
Molecular Weight:
210.14
Beilstein:
4018641
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21
grade
reagent grade
Quality Level
Assay
≥98% (GC/titration)
form
powder
pKa
(1) 3.13, (2) 4.76, (3) 6.4
solubility
H2O: 100 mg/mL, clear, colorless (Turbidity)
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
Citric acid monohydrate(CAM) is an organic acid. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061±123)Jmol-1. An investigation of its crystal growth kinetics indicates that growth is linearly dependent on size.
Application
Citric acid monohydrate may be used:
- To prepare citric acid solution employed in the acetone method of 68Ga pre-purification and radiolabeling technique.
- To prepare Tris-citrate buffer employed for the electrophoresis of bacterial enzymes.
- To improve the release of diltiazem hydrochloride from melt extruded matrix tablets.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
345.0 °F - closed cup
Flash Point(C)
173.9 °C - closed cup
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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