Citric acid Basic information

Distributed in nature Physicochemical properties History of discovery The application in the food industry Applications in the pharmaceutical industry Applications in industry Krebs cycle Solubility in water Chemical Properties Uses Methods of production

Product Name: Citric acid

Synonyms: BETZ 6251;BETZ 0623;BORIC ACID-POTASSIUM CHLORIDE-SODIUM HYDROXIDE BUFFER;BUFFER CONCENTRATE, PH 7.00;BUFFER CONCENTRATE, PH 8.00;BUFFER CONCENTRATE, PH 9.00;BUFFER CONCENTRATE, PHOSPHATE/SODIUM HYDROXIDE;BUFFER CONCENTRATE, POTASSIUM CHLORIDE/SODIUM HYDROXIDE

CAS: 77-92-9

MF: C6H8O7

MW: 192.12

EINECS: 201-069-1

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Mol File: 77-92-9.mol

Citric acid Structure

Citric acid Chemical Properties

Melting point 153-159 °C(lit.)

Boiling point 248.08°C (rough estimate)

density 1.542

vapor density 7.26 (vs air)

vapor pressure <0.1 hPa (20 °C)

refractive index 1.493~1.509

FEMA 2306 | CITRIC ACID

Fp 100 °C

storage temp. Store at RT.

solubility H2O: 1 M at 20 °C, clear, colorless

pka 3.14(at 20℃)

form grit

color White

Odor Odorless

PH 1.0-2.0 (25℃, 1M in H2O)

explosive limit 8%, 65°F

Water Solubility 750 g/L (20 ºC)

λmax λ: 260 nm Amax: 0.20

λ: 280 nm Amax: 0.10

Sensitive Hygroscopic

JECFA Number 218

Merck 14,2326

BRN 782061

Stability: Stable. Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates.

InChIKey KRKNYBCHXYNGOX-UHFFFAOYSA-N

CAS DataBase Reference 77-92-9(CAS DataBase Reference)

NIST Chemistry Reference 1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9)

EPA Substance Registry System Citric acid (77-92-9)