Citric acid

SIAL/791725 - anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99.5%

Synonym: 2-Hydroxy-propane-1,2,3-tricarboxylic acid

CAS Number: 77-92-9
Empirical Formula (Hill Notation): C₆H₈O₇
Molecular Weight: 192.12
EC Number: 201-069-1
MDL Number: MFCD00011669
Linear Formula: HOC(COOH)(CH₂COOH)₂
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-791725-100G	100 g	$57.00 1/EA	Add To Favorites
45-791725-500G	500 g	$107.55 1/EA	Add To Favorites
45-791725-1KG	1 kg	$219.74 1/EA	Add To Favorites
45-791725-6X1KG	1 kg	$914.00 1/EA	Add To Favorites
45-791725-2.5KG	2.5 kg	$340.00 1/EA	Add To Favorites
45-791725-12KG	12 kg	$955.00 1/EA	Add To Favorites

Redi-Dri free-flowing salts

Loss on Drying Graph

Free-flowing salts

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: 791725-100G

Properties
Descriptions
Safety Info.
Basic Data

anion traces	chloride (Cl^-): ≤0.001%
	oxalate (C₂O₄^2-): passes test (limit about 0.003%)
	phosphate (PO₄^3-): ≤0.001%
	sulfate (SO₄^2-): ≤0.002%
assay	≥99.5%
cation traces	Fe: ≤3 ppm
	Pb: ≤2 ppm
expl. lim.	8 %, 65 °F
form	crystals
grade	ACS reagent
	anhydrous
ign. residue	≤0.02%
impurities	Substances carbonizable by hot sulfuric acid, passes test
InChI	1S/C6H8O7/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)
InChI key	KRKNYBCHXYNGOX-UHFFFAOYSA-N
mp	153-159 °C (lit.)
pKa	(1) 3.13, (2) 4.76, (3) 6.4
product line	Redi-Dri^™
quality	free-flowing
Quality Level	200
SMILES string	OC(=O)CC(O)(CC(O)=O)C(O)=O

Application:	Citric acidhas been used as a component of citrate buffer and Fe-free sauton′s medium. It has been used in hybridization chain reaction buffer for preequilibration of coverslips for testes sections.
General description:	Citric acid also called 2-hydroxy-propane-1,2,3-tricarboxylic acid, is a component of the tricarboxylic acid cycle in all organisms. Industrial production of citric acid use fungal, yeast and citrus fruit as the major source. Aspergillus niger is majorly used for citric acid production by fermentation Manganese inhibits fermentative production of citric acid Oral supplementation of citric acid promotes tricarboxylic acid cycle and oxidative phosphorylation in mitochondria, attenuating physical fatigue.
Legal Information:	Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
Legal Information:	Redi-Dri^™ is a trademark of Sigma-Aldrich Co. LLC
Packaging:	1 kg in poly bottle
Packaging:	100, 500 g in poly bottle
Packaging:	2.5, 12 kg in poly drum

Symbol	GHS07
Signal word	Warning
Hazard statements	H319
Precautionary statements	P264 - P280 - P305 + P351 + P338 - P337 + P313
Hazard Codes	Xi
Risk Statements	36
Safety Statements	26
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥99.5%
mp	153-159 °C (lit.)
UNSPSC	12352100

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