Molecular Formula | C5H4O2 |
Molar Mass | 96.08 |
Density | 1.16 g/mL at 25 °C (lit.) |
Melting Point | -36 °C (lit.) |
Boling Point | 162 °C (lit.) |
Flash Point | 137°F |
JECFA Number | 450 |
Water Solubility | 8.3 g/100 mL |
Solubility | 95% ethanol: soluble1ML/mL, clear |
Vapor Presure | 13.5 mm Hg ( 55 °C) |
Vapor Density | 3.31 (vs air) |
Appearance | Liquid |
Color | very deep brown |
Exposure Limit | NIOSH REL: IDLH 100 ppm; OSHA PEL: TWA 5 ppm (20 mg/m3); ACGIHTLV: TWA 2 ppm (adopted). |
Merck | 14,4304 |
BRN | 105755 |
PH | >=3.0 (50g/l, 25℃) |
Storage Condition | Store below +30°C. |
Stability | Stable. Substances to be avoided include strong bases, strong oxidizing agents and strong acids. Flammable. |
Sensitive | Air Sensitive |
Explosive Limit | 2.1-19.3%(V) |
Refractive Index | n20/D 1.527 |
Physical and Chemical Properties | Colorless transparent oily liquid with special odor similar to benzaldehyde. The color changes rapidly to red-brown when exposed to light and air. It is easy to volatilize with vapor. boiling point 161.7 ℃ freezing point -36.5 ℃ relative density 1.1594 refractive index 1.5263 flash point 60 ℃ solubility slightly soluble in water, soluble in ethanol, ether, acetone, chloroform, benzene. |
Use | Used as raw materials for organic synthesis, but also for the synthesis of resins, varnishes, pesticides, pharmaceuticals, rubber and coatings |
Risk Codes | R21 - Harmful in contact with skin R23/25 - Toxic by inhalation and if swallowed. R36/37 - Irritating to eyes and respiratory system. R40 - Limited evidence of a carcinogenic effect R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S1/2 - Keep locked up and out of the reach of children. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 1199 6.1/PG 2 |
WGK Germany | 2 |
RTECS | LT7000000 |
FLUKA BRAND F CODES | 1-8-10 |
TSCA | Yes |
HS Code | 2932 12 00 |
Hazard Note | Irritant |
Hazard Class | 6.1 |
Packing Group | II |
Toxicity | LD50 orally in rats: 127 mg/kg (Jenner) |
colorless or light yellow oily liquid with special odor of benzaldehyde. Dew in the air and light easy to become yellow-brown, and the formation of resin-like, with water vapor volatilization, easily soluble in alcohol and ether, soluble in hot water, acetone, soluble in benzene, chloroform, soluble in 11 water. Flammable. Corrosive. Can stimulate the mucosa, tear, cause Head Pain. In case of open flame, high heat or contact with oxidant, there is a risk of combustion explosion. By high heat decomposition of toxic gases. In case of high fever, the internal pressure of the container increases, and there is a risk of cracking and explosion. An explosive mixture can be formed in the presence of air.
The corncob was crushed and added to the hydrolysate prepared by sulfuric acid and salt, and stirred evenly. A dilute solution of furfural is obtained by heating to boiling. After standing, refined to pure product.
Check the drill and determine the sulfate. Reagents for the determination of aromatic amines, acetone, alkaloids, vegetable oils and cholesterols. Determination of pentose and pentose sugar when the standard. Synthetic resin, refined organic matter, nitrocellulose solvent, dichloroethane extractant.
rat oral LD50:127mg/kg. Furfural can stimulate the skin and mucous membranes, the vapor is strongly irritating, and has an anesthetic effect. This product is toxic when inhaled or taken orally. The possibility of irreversible damage to the body. Staff should be protected from contact with eyes and skin. The maximum allowable concentration in air is 5 x 10 6. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Protected from light. Packaging is required to be sealed and not to be in contact with air. Should not be large or long-lived. Should be stored separately from the oxidant, acid, alkali.