Citric acid monohydrate

SIAL/C1909 - ACS reagent, ≥99.0%

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

CAS Number: 5949-29-1
Empirical Formula (Hill Notation): C₆H₈O₇ · H₂O
Molecular Weight: 210.14
EC Number: 201-069-1
MDL Number: MFCD00149972
Linear Formula: HOC(COOH)(CH₂COOH)₂ · H₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-C1909-25G	25 g	$60.20 1/EA	Add To Favorites
45-C1909-500G	500 g	$82.80 1/EA	Add To Favorites
45-C1909-1KG	1 kg	$133.00 1/EA	Add To Favorites
45-C1909-2.5KG	2.5 kg	$212.00 1/EA	Add To Favorites
45-C1909-12KG	12 kg	$802.00 1/EA	Add To Favorites

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This image depicts SKU: C1909-500G

Properties
Descriptions
Safety Info.
Basic Data

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%
assay	≥99.0%
cation traces	Fe: ≤3 ppm
	Pb: ≤2 ppm
form	powder
functional group	carboxylic acid
grade	ACS reagent
ign. residue	≤0.02%
impurities	Substances carbonizable by hot sulfuric acid, passes test
	≤0.005% Insoluble matter
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
pH	(1.8 at 50 g/l at 20 °C)
pKa	(1) 3.13, (2) 4.76, (3) 6.4
Quality Level	200
SMILES string	OC(CC(O)(C(O)=O)CC(O)=O)=O.O
solubility	H₂O: 59.2 % (w/w) at 20 °C (Citric acid in water)
	H₂O: 84.0 % (w/w) at 100 °C (Citric acid in water)
	H₂O: soluble 54 % (w/w) at 10 °C (Citric acid in water)

Application:	Citric acid monohydrate was used in the preparation of citric acid solution employed in the acetone method of ⁶⁸Ga pre-purification and radiolabeling technique. It may be used: • As release-modifying agent to improve the release of diltiazem hydrochloride from melt extruded Eudragit RS PO tablets. • To prepare citrate buffer for use in the preparation of platelets for intravital microscopy. • To prepare Tris-citrate buffer employed for the electrophoresis of bacterial enzymes.
General description:	Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be Δ_solH_m(298.15K, m = 0.0203molkg^-1) = (29061±123)Jmol^-1. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. An investigation of its crystal growth kinetics indicates that growth is linearly dependent on size. Citric acid monohydrate is an organic weak acid used as a natural preservative in food and beverage products.
Packaging:	1, 2.5 kg in poly bottle
Packaging:	12 kg in poly drum
Packaging:	25, 500 g in poly bottle

Symbol	GHS07
Signal word	Warning
Hazard statements	H319
Precautionary statements	P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36
Safety Statements	26
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point(F)	345.0 °F
Flash Point(C)	173.9 °C

Purity	≥99.0%
UNSPSC	12352100

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