W230618

Sigma-Aldrich

Citric acid

≥99.5%, FCC, FG

Linear Formula:
HOC(COOH)(CH2COOH)2
CAS Number:
Molecular Weight:
192.12
FEMA Number:
2306
Beilstein/REAXYS Number:
782061
EC Number:
Council of Europe no.:
20c
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

biological source

synthetic

grade

FG
Halal
Kosher

reg. compliance

EU Regulation 1334/2008 & 178/2002
FCC
FDA 21 CFR 117
FDA 21 CFR 184.1033

assay

≥99.5%

form

powder or granules

expl. lim.

8 %, 65 °F

pKa 

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

mp

153-159 °C (lit.)

solubility

water: 383 g/L at 25 °C

cation traces

As: ≤3.0 ppm
Cd: ≤1.0 ppm
Hg: ≤1.0 ppm
Pb: ≤0.5 ppm

Documentation

see Safety & Documentation for available documents

Featured Industry

Flavors and Fragrances

Organoleptic

odorless

food allergen

no known allergens

SMILES string

OC(=O)CC(O)(CC(O)=O)C(O)=O

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

Gene Information

human ... SRC(6714)

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Citric acid is an important organic acid that is extensively used in the food industry as a pH control agent, flavor modifier, an antimicrobial agent, a leavening agent and as an antioxidant. The treatment of potato-based foods with a combination of citric acid and glycine in low concentration may reduce the formation of acrylamide with minimal effect on the flavor. Citric acid is also an effective anti-browning agent of food and beverages due to its ability to inhibit the activity of polyphenol oxidase (PPO) enzyme responsible for browning.

Packaging

10, 25 kg in fiber drum
1 kg in poly bottle

Other Notes

Download our Flavors and Fragrances Catalog to view our entire product line.

Subscribe to our Newsletter to keep up to date on our latest Flavors and Fragrances offerings.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Burdock GA
Encyclopedia of Food and Color Additives, 1, 613-616 (1997)
Browning inhibition mechanisms by cysteine, ascorbic acid and citric acid, and identifying PPO-catechol-cysteine reaction products
Ali HM, et al
Journal of Food Science and Technology, 52(6), 3651-3659 (2015)
Use of citric acid for shelf life and quality maintenance of fresh-cut Chinese water chestnut
Jiang, Y, et al
Journal of Food Engineering, 63(3), 325-328 (2004)
Effect of citric acid and glycine addition on acrylamide and flavor in a potato model system
Low M Y, et al.
Journal of Agricultural and Food Chemistry, 54(16), 5976-5983 (2006)
Prevention of enzymatic browning in fruit and vegetables
Ioannou I
European Scientific Journal, 9(30), 310-341 (2013)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.