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Cas Database |
| Name |
BUTEN-3-YNE |
EINECS | N/A |
| CAS No. | 689-97-4 | Density | 0.709g/cm3 |
| PSA | 0.00000 | LogP | 0.80560 |
| Solubility | N/A | Melting Point |
203 °C(Solv: water (7732-18-5)) |
| Formula | C4H4 | Boiling Point | 5.1°C at 760 mmHg |
| Molecular Weight | 52.0758 | Flash Point | N/A |
| Transport Information | N/A | Appearance | N/A |
| 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. | Risk Codes | R20/21/22 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
1-Butenyne;1-Butyn-3-ene; 3-Buten-1-yne; 3-Butyn-1-ene; Butenyne; Ethene, ethynyl-;Monovinylacetylene; Vinylacetylene; Vinylethyne |
Article Data | 187 |
BUTEN-3-YNE Synthetic route
| 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% |
- 1335114-45-8
benzoic 2-methyl-3-furoic anhydride
A
- 689-97-4
3-buten-1-yne
B
- 42827-31-6
4-methylene-2-cyclobuten-1-one
C
- 65-85-0
benzoic acid
| Conditions | Yield |
|---|---|
| at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent); | A 55% B 17% C n/a |
- 1335114-46-9
benzoic 3-methyl-2-furoic anhydride
A
- 689-97-4
3-buten-1-yne
B
- 42827-31-6
4-methylene-2-cyclobuten-1-one
C
- 65-85-0
benzoic acid
| Conditions | Yield |
|---|---|
| at 550℃; under 0.01 Torr; Pyrolysis; neat (no solvent); | A 50% B 15% C n/a |
- 1574-41-0
Z-piperylene
A
- 689-97-4
3-buten-1-yne
B
- 2004-70-8
1-methylbuta-1,3-diene
C
- 4461-48-7
4-methyl-2-pentene
D
- 542-92-7
cyclopenta-1,3-diene
E
- 106-99-0
buta-1,3-diene
F
- 74-86-2
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℃; |
- 34557-54-5
methane
- 689-97-4
3-buten-1-yne
| Conditions | Yield |
|---|---|
| With potassium hydroxide at 120℃; |
BUTEN-3-YNE Chemical Properties
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 Toxicity Data With Reference
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. |
BUTEN-3-YNE Consensus Reports
BUTEN-3-YNE Safety Profile
BUTEN-3-YNE Specification
Treasury ventilated low-temperature drying; closed storage; with oxidants, acids separate; easy storage a long time to prevent the peroxide generated.
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