Furfural , standardforGC,≥99.5%(GC) , 98-01-1
Synonym(s):
2-Furaldehyde;2-Furancarbaldehyde;Furan-2-carboxaldehyde;Furfural
CAS NO.：98-01-1
Empirical Formula: C5H4O2
Molecular Weight: 96.08
MDL number: MFCD00003229
EINECS: 202-627-7
PRODUCT Properties
| Melting point: | -36 °C (lit.) |
| Boiling point: | 162 °C (lit.) |
| Density | 1.16 g/mL at 25 °C (lit.) |
| vapor density | 3.31 (vs air) |
| vapor pressure | 13.5 mm Hg ( 55 °C) |
| refractive index | n |
| FEMA | 2489 | FURFURAL |
| Flash point: | 137 °F |
| storage temp. | Store below +30°C. |
| solubility | 95% ethanol: soluble1ML/mL, clear |
| form | Liquid |
| color | very deep brown |
| Odor | at 1.00 % in dipropylene glycol. sweet woody almond fragrant baked bread |
| PH | >=3.0 (50g/l, 25℃) |
| explosive limit | 2.1-19.3%(V) |
| Odor Type | bready |
| Water Solubility | 8.3 g/100 mL |
| FreezingPoint | -36.5℃ |
| Sensitive | Air Sensitive |
| JECFA Number | 450 |
| Merck | 14,4304 |
| BRN | 105755 |
| Henry's Law Constant | 1.52(x 10-6 atm?m3/mol) at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: IDLH 100 ppm; OSHA PEL: TWA 5 ppm (20 mg/m3); ACGIH
TLV: TWA 2 ppm (adopted). |
| Dielectric constant | 41.9（20℃） |
| Stability: | Stable. Substances to be avoided include strong bases, strong oxidizing agents and strong acids. Flammable. |
| LogP | 0.41 |
Description and Uses
Furfural is a colourless to amber-like oily liquid with an almond-like odour. On exposure to light and air, it turns reddish brown. Furfural is used in making chemicals, as a solvent in petroleum refining, a fungicide, and a weed killer. It is incompatible with strong acids, oxidisers, and strong alkalis. It undergoes polymerisation on contact with strong acids or strong alkalis. Furfural is produced commercially by the acid hydrolysis of pentosan polysaccharides from non-food residues of food crops and wood wastes. It is used widely as a solvent in petroleum refining, in the production of phenolic resins, and in a variety of other applications. Human exposure to furfural occurs during its production and use, as a result of its natural occurrence in many foods and from the combustion of coal and wood.
Commercially, furfural is produced through hydrolysis of pentosan in agricultural byproducts (e.g., crop wastes). It has a diverse applications which include as a solvent in various manufacturing industries (e.g., petroleum and automotive products), accelerant for vulcanization of rubber, raw material for manufacturing furan derivatives (e.g., tetrahydrofurfuryl alcohol) and synthetic resins, wetting agent, flavoring ingredient for foods (e.g., roasted coffee), fragrance in consumer and personal care products (e.g., fragrance cream, bath products, toiletries), and pesticides for controlling unwanted microorganisms, fungi, weeds, insects, and nematodes. The application methods for pesticidal use include drip irritation, spray boom, sprinkler, and low-pressure back-pack spray.
Safety
| Symbol(GHS) |    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 Codes | T,Xi |
| Risk Statements | 21-23/25-36/37-40-36/37/38 |
| Safety Statements | 26-36/37/39-45-1/2-36/37 |
| RIDADR | UN 1199 6.1/PG 2 |
| WGK Germany | 2 |
| RTECS | LT7000000 |
| F | 1-8-10 |
| Autoignition Temperature | 599 °F &_& 599 °F |
| Hazard Note | Irritant |
| TSCA | Yes |
| HS Code | 2932 12 00 |
| HazardClass | 6.1 |
| PackingGroup | II |
| Toxicity | LD50 orally in rats: 127 mg/kg (Jenner) |
| IDLA | 100 ppm |
