185914

Furfural

99%

• Synonym(s): 2-Furaldehyde, Furan-2-carboxaldehyde
• Empirical Formula (Hill Notation): C₅H₄O₂
• CAS Number: 98-01-1
• Molecular Weight: 96.08
• Beilstein: 105755
• EC Number: 202-627-7
• MDL number: MFCD00003229
• UNSPSC Code: 12352100
• eCl@ss: 39150703
• PubChem Substance ID: 57647750
• NACRES: NA.21

Properties

• vapor density: 3.31 (vs air)
• Quality Level: 100
• vapor pressure: 13.5 mmHg ( 55 °C)
• Assay: 99%
• form: liquid
• autoignition temp.: 599 °F
• expl. lim.: 19.3 %
• refractive index: n20/D 1.525 (lit.)
• bp: 162 °C (lit.)
• mp: −36 °C (lit.)
• density: 1.16 g/mL at 25 °C (lit.)
• functional group: aldehyde
• SMILES string: [H]C(=O)c1ccco1
• InChI: 1S/C5H4O2/c6-4-5-2-1-3-7-5/h1-4H
• InChI key: HYBBIBNJHNGZAN-UHFFFAOYSA-N

Description

General description

Furfural is a heterocyclic aldehyde. It can be produced from agricultural raw materials containing pentosans[1] and lignocellulosic feedstock.[2] It is also obtained from xylose, via dehydration. Furan has various interesting properties, such as it thermosets easily, has physical strength and exhibits resistance to corrosion. It is a raw material for the production of various furan-based chemicals and solvents such as:[3]

• methylfuran
• furfuryl alcohol
• tetrahydrofurfuryl alcohol
• tetrahydrofuran
• methyltetrahydrofuran
• dihydropyran
• furoic acid

Application

Furfural has been employed as a standard for the HPLC quantification of furfural in the autohydrolysate liquor obtained from microwave-irradiated maize bran.[4] It may be used in the preparation of γ-valerolactone (GVL)[5] and biofuel 2-methylfuran (51% yield).[6]

Furfural undergoes hydrogenation in the vapor-phase over copper-containing catalysts to form furfuryl alcohol as the predominant product.[7] It may also be used to prepare gel precursors for phenol-furfural aerogels.[8]

Safety Information

• Pictograms: GHS02,GHS06,GHS08
• Signal Word: Danger
• Hazard Statements: H226,H301,H312,H315,H319,H330,H335,H351,H412
• Precautionary Statements: P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Chronic 3 - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 136.4 °F - closed cup
• Flash Point(C): 58 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves