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CIS-BUTENEDIOIC ANHYDRIDE CAS#108-31-6

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Chemical Name：CIS-BUTENEDIOIC ANHYDRIDE

CAS No.:108-31-6

Molecular Formula：C4H2O3

Molecular weight:98.06

Sample: Available

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Product Details

Products Description of CIS-BUTENEDIOIC ANHYDRIDE CAS#108-31-6

Maleic anhydride, also known as "maleic anhydride", is the anhydride of maleic acid. It is a colorless or white solid with a sour taste at room temperature, with a molecular formula of C4H2O3. Molecular weight 98.06. Needle-shaped crystals are obtained from chloroform or ether. Melting point 60℃, boiling point 82℃ (1.8665kPa), relative density 1.31460. Soluble in acetone, chloroform, ether, slightly soluble in petroleum ether. It dissolves in water to form cis-butenedioic acid, and dissolves in alcohol to form esters. It can react with compounds containing conjugated double bonds to form diene synthesis. It is toxic and strongly irritates the mucous membrane.

CIS-BUTENEDIOIC ANHYDRIDE Chemical Properties

Melting point	51-56 °C (lit.)
Boiling point	200 °C (lit.)
density	1.48
vapor density	3.4 (vs air)
vapor pressure	0.16 mm Hg ( 20 °C)
refractive index	1.4688 (estimate)
Fp	218 °F
storage temp.	Store below +30°C.
solubility	Chloroform (Slightly), Ethyl Acetate (Slightly)
pka	0[at 20 ℃]
form	powder
color	White
PH	0.8 (550g/l, H2O, 20℃)Hydrolysis
Odor	Mild acrid odor.
explosive limit	1.4-7.1%(V)
Water Solubility	79 g/100 mL (25 ºC)
Sensitive	Moisture Sensitive
Merck	14,5704
BRN	106909
Henry's Law Constant	(atm?m³/mol): Not applicable - reacts with water
Exposure limits	NIOSH REL: TWA 1 ppm (0.25 mg/m³), IDLH 10 ppm; OSHA PEL: TWA 0.25 ppm; ACGIH TLV: TWA 0.25 ppm with an intended change of 0.1 ppm.
Dielectric constant	51.0（60℃）
Stability:	Stable. Combustible. Incompatible with water, strong oxidizing agents, alkali metals, strong bases, amines, most common metals, polymerization catalysts and accelerators.
InChIKey	FPYJFEHAWHCUMM-UHFFFAOYSA-N
LogP	-2.61 at 20℃
CAS DataBase Reference	108-31-6(CAS DataBase Reference)
NIST Chemistry Reference	2,5-Furandione(108-31-6)
EPA Substance Registry System	Maleic anhydride (108-31-6)

Safety Information

Hazard Codes	C
Risk Statements	22-34-42/43
Safety Statements	22-26-36/37/39-45
RIDADR	UN 2215 8/PG 3
WGK Germany	1
RTECS	ON3675000
F	21
Autoignition Temperature	870 °F
TSCA	Yes
HS Code	2917 14 00
HazardClass	8
PackingGroup	III
Hazardous Substances Data	108-31-6(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 1090 mg/kg LD50 dermal Rabbit 2620 mg/kg
IDLA	10 mg/m3

Product Application of CIS-BUTENEDIOIC ANHYDRIDE CAS#108-31-6

It is used as raw material for producing 1,4-butanediol, γ-butyrolactone, tetrahydrofuran, succinic acid, unsaturated polyester resin, alkyd resin, etc. It is also used in medicine and pesticides.

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