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CAS No.: | 689-97-4 |
---|---|
Name: | 1-Buten-3-yne |
Article Data: | 187 |
Molecular Structure: | |
Formula: | C4H4 |
Molecular Weight: | 52.0758 |
Synonyms: | 1-Butenyne;1-Butyn-3-ene; 3-Buten-1-yne; 3-Butyn-1-ene; Butenyne; Ethene, ethynyl-;Monovinylacetylene; Vinylacetylene; Vinylethyne |
Density: | 0.709g/cm3 |
Melting Point: | 203 °C(Solv: water (7732-18-5)) |
Boiling Point: | 5.1°C at 760 mmHg |
Hazard Symbols: | Xn |
Risk Codes: | R20/21/22 |
Safety: | Low toxicity by inhalation. Forms explosive peroxides with air or oxygen. Very exothermic decomposition when heated. Reacts explosively when heated with 1,3-butadiene or oxygen. Reacts with silver nitrate to form the explosive silver buten-3-ynide. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS and ALKYNES. |
PSA: | 0.00000 |
LogP: | 0.80560 |
Conditions | Yield |
---|---|
With potassium hydroxide; 2,3-dimethyl-2,3-butane diol; Aliquat 336 In Petroleum ether for 1.5h; Heating; | 70% |
With potassium hydroxide; calcium oxide In dimethyl sulfoxide; xylene at 120℃; | |
With potassium hydroxide; 2-Butoxyethanol In ethylene glycol at 170℃; for 1h; Yield given; | |
With potassium hydroxide; 2,3-dimethyl-2,3-butane diol; Aliquat 336 In various solvent(s) at 135℃; for 1.5h; |
Conditions | Yield |
---|---|
With potassium hydroxide; cetyldimethylbenzylammonium chloride In dimethyl sulfoxide at 90 - 100℃; for 1h; | 69% |
With ammonia; sodium amide | |
In ethylene glycol at 50℃; Inert atmosphere; |
Conditions | Yield |
---|---|
at 800 - 850℃; under 0.01 Torr; | 67% |
at 850℃; for 3h; | 67% |
benzoic 2-methyl-3-furoic anhydride
A
3-buten-1-yne
B
4-methylene-2-cyclobuten-1-one
C
benzoic acid
Conditions | Yield |
---|---|
at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent); | A 55% B 17% C n/a |
benzoic 3-methyl-2-furoic anhydride
A
3-buten-1-yne
B
4-methylene-2-cyclobuten-1-one
C
benzoic acid
Conditions | Yield |
---|---|
at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent); | A 50% B 15% C n/a |
Z-piperylene
A
3-buten-1-yne
B
1-methylbuta-1,3-diene
C
4-methyl-2-pentene
D
cyclopenta-1,3-diene
E
buta-1,3-diene
F
acetylene
Conditions | Yield |
---|---|
at 20℃; under 0.4 Torr; Product distribution; Irradiation; variation of pressure and additives; | A 0.2% B 0.3% C 0.13% D 0.25% E 0.09% F 0.22% |
Conditions | Yield |
---|---|
bei der Einw. dunkler elektrischer Entladungen; |
Conditions | Yield |
---|---|
With potassium hydroxide at 105 - 110℃; |
methane
3-buten-1-yne
Conditions | Yield |
---|---|
With potassium hydroxide at 120℃; |
Details of BUTEN-3-YNE (689-97-4).
Molecular Formula: C4H4
Molecular Weight: 52.08
Properties: Gas with acetylene-like odor. Flash p: <-5°C, lel: 2%, uel: 100% d: 0.68 @ 1.7 atm, vap d: 1.8, bp: 2–3°C.
Water Solubility: 1790mg/L
Boiling Point: 5.1°C
Molecular Structure:
BUTEN-3-YNE (689-97-4) has the toxicity.
1. mouse LC50 inhalation 97200mg/m3/2H (97200mg/m3) "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 119, 1982.
2. | ihl-mus LC50:97,200 mg/m3/2H | 85GMAT Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,119. |