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Basic Information
| CAS No.: | 696-59-3 |
|---|---|
| Name: | 2,5-Dimethoxytetrahydrofuran |
| Molecular Structure: | |
|
|
|
| Formula: | C6H12O3 |
| Molecular Weight: | 132.159 |
| Synonyms: | 2,5-Bis(methyloxy)tetrahydrofuran;Dimethoxytetrahydrofuran;NSC 7911;Tetrahydro-2,5-dimethoxyfuran; |
| EINECS: | 211-797-1 |
| Density: | 1.02 g/cm3 |
| Melting Point: | -45 °C |
| Boiling Point: | 145.7 °C at 760 mmHg |
| Flash Point: | 35 °C |
| Solubility: | 350 g/L (20 °C) in water |
| Appearance: | Colorless to light yellow liquid |
| Hazard Symbols: |
 Xn,  Xi
|
| Risk Codes: | 10-36/37/38-36-20/21 |
| Safety: | 26-36-36/37/39-16 |
| Transport Information: | UN 1993 3/PG 3 |
| PSA: | 27.69000 |
| LogP: | 0.74180 |
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Synthetic route
- 67-56-1
methanol
- 79668-89-6
(1E,3E)-1,4-Bis-trimethylsilanyloxy-buta-1,3-diene
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride at -70 - -65℃; | 56% |
- 67-56-1
methanol
- 1165952-91-9
cyclohexa-1,3-diene
A
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
B
- 6922-39-0
succinaldehyde bis(dimethyl acetal)
C
- 56681-97-1
4,4-dimethoxybutanal
Conditions
| Conditions | Yield |
|---|---|
| With 2,3-dimercapto-succinic acid; ozone 1) -78 deg C; Yield given. Multistep reaction. Yields of byproduct given; |
...Expand
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 5334-41-8
5-amino-4-cyano-1-methylpyrazole
- 146885-48-5
4-cyano-1-methyl-5-(1H-pyrrol-1-yl)-1H-pyrazole
Conditions
| Conditions | Yield |
|---|---|
| With acetic acid for 0.5h; Heating; | 100% |
| In acetic acid for 0.5h; Heating; | 95% |
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 2857-97-8
trimethylsilyl bromide
- 86428-39-9
1,4-Dibromo-1,4-dimethoxy-butane
Conditions
| Conditions | Yield |
|---|---|
| 100% |
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 16029-98-4
trimethylsilyl iodide
- 86428-40-2
1,4-Diiodo-1,4-dimethoxy-butane
Conditions
| Conditions | Yield |
|---|---|
| 100% |
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 108-98-5
thiophenol
- 53480-95-8
1,1,4,4-tetrakis(phenylthio)butane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride for 19.5h; | 100% |
| With hydrogenchloride at 25℃; for 7.5h; Yield given; |
Conditions
| Conditions | Yield |
|---|---|
| With bismuth (III) nitrate pentahydrate at 90℃; for 0.0833333h; Microwave irradiation; neat (no solvent); | 100% |
| With bismuth (III) nitrate pentahydrate at 20℃; for 0.0833333h; Sonication; Neat (no solvent); | 99% |
| With copper dichloride In water Reflux; | 99% |
Conditions
| Conditions | Yield |
|---|---|
| In pyridine; acetic acid Heating; | 100% |
| With phosphorus pentoxide In toluene at 110℃; for 0.166667h; | 96% |
| With water at 140℃; for 0.333333h; Paal-Knorr pyrrole synthesis; Microwave irradiation; | 92% |
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 70-55-3
toluene-4-sulfonamide
- 17639-64-4
N-p-toluenesulfonylpyrrole
Conditions
| Conditions | Yield |
|---|---|
| With phosphorus pentoxide In toluene at 110℃; for 0.333333h; | 100% |
| With scandium tris(trifluoromethanesulfonate) In 1,4-dioxane at 100℃; for 0.666667h; Clauson-Kaas condensation; | 95% |
| With trifluorormethanesulfonic acid In dichloromethane at 20℃; for 2h; | 90% |
- 696-59-3
cis,trans-2,5-dimethoxytetrahydrofuran
- 1635-61-6
5-chloro-2-nitroaniline
- 311807-83-7
1H–1–(5–chloro–2–nitrophenyl)pyrrole
Conditions
| Conditions | Yield |
|---|---|
| With 4-chlorpyridine hydrochloride In 1,4-dioxane Clauson-Kaas Synthesis; Reflux; | 100% |
| In acetic acid for 1h; Heating; | 95% |
| With acetic acid for 1.5h; Reflux; | 92% |
Raw Materials
Downstream Products
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2,5-Dimethoxytetrahydrofuran
Chemistry
MF: C6H12O3
MW: 132.16
EINECS: 211-797-1
mp: -45 °C
bp: 145-147 °C(lit.)
density: 1.023 g/mL at 20 °C(lit.)
refractive index: n20/D 1.418
Fp: 95 °F
storage temp: Flammables area
Water Solubility: 350 g/L (20 oC)
BRN: 104261
MW: 132.16
EINECS: 211-797-1
mp: -45 °C
bp: 145-147 °C(lit.)
density: 1.023 g/mL at 20 °C(lit.)
refractive index: n20/D 1.418
Fp: 95 °F
storage temp: Flammables area
Water Solubility: 350 g/L (20 oC)
BRN: 104261
Toxicity Data With Reference
1、RTECS#: CAS# 696-59-3: None listed
2、LD50/LC50: RTECS: Not available. Other: Inhalation, rat: LC50 > 6.2mg/l/4H Oral, rat: LD50 = 2040 mg/kg Skin, rabbit: LD50 > 400 mg/kg
3、Carcinogenicity: 2,5-Dimethoxytetrahydrofuran, mixture of cis- and trans isomers - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
4、Other: The toxicological properties have not been fully investigated.
2、LD50/LC50: RTECS: Not available. Other: Inhalation, rat: LC50 > 6.2mg/l/4H Oral, rat: LD50 = 2040 mg/kg Skin, rabbit: LD50 > 400 mg/kg
3、Carcinogenicity: 2,5-Dimethoxytetrahydrofuran, mixture of cis- and trans isomers - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
4、Other: The toxicological properties have not been fully investigated.
Safety Profile
Specification
Handling and Storage of 2,5-DIMETHOXYTETRAHYDROFURAN
1、Handling: Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Take precautionary measures against static discharges. Use only in a chemical fume hood.
2、Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.
1、Handling: Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Take precautionary measures against static discharges. Use only in a chemical fume hood.
2、Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.
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