C0759

Acide citrique

99%, crystals

• Synonyme(s) : 2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid
• Formule linéaire : HOC(COOH)(CH₂COOH)₂
• Numéro CAS: 77-92-9
• Poids moléculaire : 192.12
• NACRES: NA.21
• PubChem Substance ID: 329774820
• eCl@ss: 39021801
• UNSPSC Code: 12352100
• EC Number: 201-069-1
• MDL number: MFCD00011669
• Beilstein/REAXYS Number: 782061
• Assay: 99%
• Concentration: ≤100%
• Form: crystals

Propriétés

• Nom du produit: Acide citrique, 99%
• vapor pressure: ≤ 0.1 hPa ( at 25 °C)
• Quality Segment: 200
• assay: 99%
• form: crystals
• expl. lim.: 8 %, 65 °F
• concentration: ≤100%
• pH: ca.1,7-at 100 g/l-at 20 °C
• pKa (25 °C): (1) 3.13, (2) 4.76, (3) 6.40
• pKa: (1) 3.13, (2) 4.76, (3) 6.4
• bp: 200 °C/at 1.013 hPa (decomposition)
• mp: 153-159 °C (lit.)
• solubility: water: soluble 383 g/L at 25 °C
• density: 1,67 g/cm³ at at 20 °C
• functional group: carboxylic acid, hydroxyl
• 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

Citric acid is a natural component widely usedin many industrial applications such as chelation, buffering, pH adjustment,and derivatization. It can also be used as a reagent in condensation, acidcatalysis, cycloaddition, deprotection, and decarboxylation reactions.

Application

Citric acid can be used as a reactant to synthesize:

• Trialkyl citrates via sulfuric acid-catalyzed esterification with aliphatic alcohols C₂-C₅.
• Biodegradable thermoset polymer via catalyst-free polycondensation reaction.

It can also be used as a catalyst to synthesize amido alkyl naphthols by reacting 2-naphthols, aldehydes, and amides/ureas.

Informations sur la sécurité

• 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
• Classe de stockage: 11 - Combustible Solids
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves