Furfural（CAS#98-01-1）

Chemical Property:

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

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Product Detail

Product Tags

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)

Introduction

Furfural, also known as 2-hydroxyunsaturated ketone or 2-hydroxypentanone. The following is an introduction to the properties, uses, preparation methods and safety information of furfural:

Quality:

- It has a colorless appearance and has a special sweet flavor.

- Furfural has low solubility in water, but it is soluble in alcohol and ether solvents.

- Furfural is easily oxidized and easily decomposed by heat.

Method:

- A common method for preparing furfural is obtained by oxidation of C6 alkyl ketones (e.g., hexanone).

- For example, hexanone can be oxidized to furfural using oxygen and catalysts such as potassium permanganate or hydrogen peroxide.

- In addition, acetic acid can also be reacted with various C3-C5 alcohols (such as isoamyl alcohol, etc.) to form the corresponding ester, and then reduced to obtain furfural.

Safety Information:

- Furfural has low toxicity but still needs to be used and stored with care.

- Avoid contact with skin and eyes, and rinse immediately with plenty of water if it does.

- Care should be taken to avoid contact with strong oxidants, ignition sources, etc. during storage and use to prevent fire or explosion.

- Good ventilation conditions should be provided during use to avoid inhalation of furfural vapors.

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