332-77-4

332-77-4 - Names and Identifiers

Name	2,5-Dimethoxy-2,5-dihydrofuran, mixture ofcis and trans
Synonyms	DMDF 2,5-DIMETH DiMethoxy-2,5-dihydro 2,5-Dimethoxy-2,5-dihydrofuran 2,5-Dihydro-2,5-dimethoxyfuran 2,5-Dihydro-2,5-dimethoxyfuran, DMDF (2R,5S)-2,5-dimethoxy-2,5-dihydrofuran (2S,5S)-2,5-dimethoxy-2,5-dihydrofuran (2R,5R)-2,5-dimethoxy-2,5-dihydrofuran 2,5-DIHYDRO-2,5-DIMETHOXYFURAN (MIXTURE 2,5-Dimethoxy-2,5-dihydrofuran, mixture ofcis and trans 2,5-Dimethoxy-2,5-dihydrofuran (cis- and trans- mixture)
CAS	332-77-4
EINECS	206-367-5
InChI	InChI=1/C6H10O3/c1-7-5-3-4-6(8-2)9-5/h3-6H,1-2H3/t5-,6-/m0/s1
InChIKey	WXFWXFIWDGJRSC-UHFFFAOYSA-N

332-77-4 - Physico-chemical Properties

Molecular Formula	C6H10O3
Molar Mass	130.14
Density	1.073g/mLat 25°C(lit.)
Boling Point	160-162°C(lit.)
Flash Point	117°F
Solubility	368g/l
Vapor Presure	3.02mmHg at 25°C
Appearance	Liquid
Color	Clear
BRN	113225
PH	6-7 (200g/l, H2O, 20℃)
Storage Condition	Store below +30°C.
Explosive Limit	1.1-18.3%(V)
Refractive Index	n20/D 1.434(lit.)
Physical and Chemical Properties	The boiling point is 160-162 ℃,56-60 ℃(2.0kPa), the relative density is 1.073, the refractive index is 1.4339, and the flash point is 47 ℃.

332-77-4 - Risk and Safety

Hazard Symbols	Xn - Harmful
Risk Codes	10 - Flammable
Safety Description	S16 - Keep away from sources of ignition. S29 - Do not empty into drains. S33 - Take precautionary measures against static discharges. S24/25 - Avoid contact with skin and eyes.
UN IDs	UN 1993 3/PG 3
WGK Germany	1
TSCA	Yes
HS Code	29321900
Hazard Class	3
Packing Group	III

332-77-4 - Reference Information

NIST chemical information	Information provided by: webbook.nist.gov (external link)
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	this product is an intermediate for the production of atropine sulfate and anisodamine hydrobromide by synthetic method. 2, 5-dimethoxydihydrofuran is hydrolyzed with hydrochloric acid to produce 2-hydroxy-1, 4-succinaldehyde; hydrogenation and then hydrolysis to obtain succinaldehyde. Used as a pharmaceutical intermediate
production method	obtained by etherification and reduction of furan. The reaction is carried out in an electrolytic cell. Add methanol and ammonium bromide to the electrolytic cell and stir until ammonium bromide is dissolved. When the solution is cooled to 0 ℃, furan is added, the electrolyzer is closed and cooled to below -5 ℃, the input current of the electrolysis circuit is turned on, the voltage is gradually adjusted to about 15V after normal operation, the current is 40-45A, and the electrolysis temperature is controlled at 0-5 ℃. After the electrolysis, stop stirring, suck the electrolyte to the methanol recovery pot, and alkalize. Then heat to remove ammonia gas, steam out methanol, until the gas phase temperature reaches 65 ℃ when the methanol recovery is completed. Cooling, filtration, fractionation of the filtrate, collection of 152-164 ℃ positive boiling point fraction, that is, 2, 5-dimethoxydihydrofuran.

Last Update：2024-04-09 21:54:55

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332-77-4

332-77-4

2,5-Dimethoxy-2,5-dihydrofuran, mixture ofcis and trans

CAS: 332-77-4

Molecular Formula: C6H10O3

332-77-4 - Names and Identifiers

332-77-4 - Physico-chemical Properties

332-77-4 - Risk and Safety

332-77-4 - Reference Information

Supplier List

332-77-4 Request for Quotation

2,5-Dimethoxy-2,5-dihydrofuran, mixture ofcis and trans

CAS: 332-77-4

Molecular Formula: C6H10O3

332-77-4 - Names and Identifiers

332-77-4 - Physico-chemical Properties

332-77-4 - Risk and Safety

332-77-4 - Reference Information

Supplier List

332-77-4