Citric acid
USP/1134368 - United States Pharmacopeia (USP) Reference Standard
CAS Number: 77-92-9
Empirical Formula (Hill Notation): C6H8O7
Molecular Weight: 192.12
MDL Number: MFCD00011669
Linear Formula: HOC(COOH)(CH2COOH)2
Product Type: Chemical
application(s) | pharmaceutical (small molecule) |
expl. lim. | 8 %, 65 °F |
format | neat |
grade | pharmaceutical primary standard (unable to validate for USP) |
InChI | 1S/C6H8O7/c7-3(8)1-6(13,5 |
InChI key | KRKNYBCHXYNGOX-UHFFFAOYSA |
manufacturer/tradename | USP |
mp | 153-159 °C (lit.) |
pKa | (1) 3.13, (2) 4.76, (3) 6.4 |
SMILES string | OC(=O)CC(O)(CC(O)=O)C(O)= |
solubility | water: 383 g/L at 25 °C |
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. |
Application: | This USP reference standard is intended for use in specified quality tests and assays. Also used to prepare standard solutions to test the limit of citric acid according to the following United States Pharmacopeia (USP) monographs:• Powdered Garcinia Hydroxycitrate Extract • Calcium Citrate Malate • Anticoagulant Citrate Phosphate Dextrose Adenine Solution • Magnesium Carbonate, Citric Acid, and Potassium Citrate for Oral Solution • Monoglyceride Citrate • Anticoagulant Sodium Citrate Solution • Tricitrates Oral Solution • Anticoagulant Citrate Phosphate Dextrose Solution • Cranberry Liquid Preparation |
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 ![]() ![]() |
Other Notes: | Sales restrictions may apply. |
Other Notes: | USP issued SDS can be found here ![]() ![]() |
Symbol | ![]() |
Signal word | Warning |
Hazard statements | H319 |
Precautionary statements | P264 - P280 - P305 + P351 + P338 - P337 + P313 |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
mp | 153-159 °C (lit.) |
UNSPSC | 41116107 |