1134368

Citric acid

United States Pharmacopeia (USP) Reference Standard

• Linear Formula: HOC(COOH)(CH₂COOH)₂
• CAS Number: 77-92-9
• Molecular Weight: 192.12
• Beilstein/REAXYS Number: 782061
• MDL number: MFCD00011669
• UNSPSC Code: 41116107
• PubChem Substance ID: 329749410
• NACRES: NA.24

Properties

• grade: pharmaceutical primary standard
• API family: citric acid
• expl. lim.: 8 %, 65 °F
• manufacturer/tradename: USP
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• mp: 153-159 °C (lit.)
• solubility: water: 383 g/L at 25 °C
• application(s): pharmaceutical (small molecule)
• format: neat
• 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

Description

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, has been developed and issued under the Authority of the issuing Pharmacopoeia.

For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Citric acid USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:

• Anhydrous Citric Acid
• Citric Acid Monohydrate
• Magnesium Carbonate, Citric Acid, and Potassium Citrate for Oral Solution
• Monoglyceride Citrate
• Powdered Garcinia Hydroxycitrate Extract
• Anticoagulant Citrate Phosphate Dextrose Solution
• Potassium Citrate Extended-Release Tablets

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H319,H335
• pcodes: P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable