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ChemicalBook >> CAS DataBase List >>2-METHYL-1-BUTEN-3-YNE

2-METHYL-1-BUTEN-3-YNE

CAS No.
78-80-8
Chemical Name:
2-METHYL-1-BUTEN-3-YNE
Synonyms
2-METHYLBUT-1-EN-3-YNE;1-Buten-3-yne, 2-methyl-;Valylene;2-Methylbutenyne;CH2=C(CH3)CequivCH;2-Methyl-1-butenyne;ISOPROPENYLACETYLENE;Isopropenylancetylene;2-methyl-1-buten-3-yn;ISOPROPENYLACETHYLENE
CBNumber:
CB7123696
Molecular Formula:
C5H6
Molecular Weight:
66.1
MDL Number:
MFCD00008599
MOL File:
78-80-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 02:48:59
Product description Number Pack Size Price
2-Methyl-1-Buten-3-yne, 99% 82030 5G $58.39
2-Methylbut-1-en-3-yne 97% OR13594 5g $102
2-Methylbut-1-en-3-yne 97% OR13594 25g $428
2-METHYL-1-BUTEN-3-YNE 82030 5G $45.33
3-Methyl-3-buten-1-yne M294955 25g $1090

2-METHYL-1-BUTEN-3-YNE Properties

Melting point -113 °C
Boiling point 32 °C(lit.)
Density 0.695 g/mL at 25 °C(lit.)
vapor pressure 8.96 psi ( 20 °C)
refractive index n20/D 1.416(lit.)
Flash point 20 °F
storage temp. 2-8°C
solubility soluble in Chloroform, Methanol
form Liquid
color Clear
Water Solubility Not miscible in water.
BRN 969175
InChI 1S/C5H6/c1-4-5(2)3/h1H,2H2,3H3
InChIKey BOFLDKIFLIFLJA-UHFFFAOYSA-N
SMILES CC(=C)C#C
FDA UNII P92A4F7TZS
UNSPSC Code 12352100

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Exclamation Mark (GHS07)Health Hazard (GHS08)
GHS02,GHS07,GHS08
Signal word  Danger
Hazard statements  H224-H302-H304-H315-H319-H332-H335
Precautionary statements  P210-P233-P240-P241-P242-P243-P280-P264-P270-P261-P271-P303+P361+P353-P370+P378-P301+P312-P330-P301+P310-P331-P302+P352-P332+P313-P362+P364-P305+P351+P338-P337+P313-P304+P340-P312-P403+P235-P405-P403+P233-P501
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves
Hazard Codes  F+,Xn,F,Xi
Risk Statements  12-20/22-36/37/38-65
Safety Statements  16-26-36/37-62
RIDADR  UN 3295 3/PG 1
WGK Germany  3
RTECS  EN0960000
10-19-23
HazardClass  3
PackingGroup  I
HS Code  29012900
Storage Class 3 - Flammable liquids
Hazard Classifications Acute Tox. 4 Oral
Asp. Tox. 1
Eye Irrit. 2
Flam. Liq. 1
Skin Irrit. 2
STOT SE 3
Limited Quantities 0.5 L (0.1 gallon)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (300g or 300ml)
NFPA 704
4
2 2

2-METHYL-1-BUTEN-3-YNE price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
GFS CHEMICALS 82030 2-Methyl-1-Buten-3-yne, 99% 78-80-8 5G $58.39 2026-06-03 Buy
Apolloscientific OR13594 2-Methylbut-1-en-3-yne 97% 78-80-8 5g $102 2026-06-04 Buy
Apolloscientific OR13594 2-Methylbut-1-en-3-yne 97% 78-80-8 25g $428 2026-06-04 Buy
GFS CHEMICALS 82030 2-METHYL-1-BUTEN-3-YNE 78-80-8 5G $45.33 2021-12-16 Buy
TRC M294955 3-Methyl-3-buten-1-yne 78-80-8 25g $1090 2021-12-16 Buy
Product number Packaging Price Buy
82030 5G $58.39 Buy
OR13594 5g $102 Buy
OR13594 25g $428 Buy
82030 5G $45.33 Buy
M294955 25g $1090 Buy

2-METHYL-1-BUTEN-3-YNE Chemical Properties,Uses,Production

Chemical Properties

Clear colorless to light yellow liquid

Uses

2-Methyl-1-buten-3-yne is a reagent used in analytical studies to determine the aroma compounds present in various things by using pyrolysis gas chromatography mass spectrometry techniques.

Hazard

Flammable, dangerous fire risk.

335-03-5
814-78-8
338-68-1
78-80-8
Synthesis of 2-METHYL-1-BUTEN-3-YNE from Cyclopropane, 1,1-difluoro-2,2-dimethyl-

2-METHYL-1-BUTEN-3-YNE Suppliers

Global( 68)Suppliers
Supplier Tel Email Country ProdList Advantage
Career Henan Chemica Co
+86-0371-86658258 +8613203830695 laboratory@coreychem.com China 30224 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-81139210 +86-17392587031 1059@dideu.com China 9996 58
Shanghai Acmec Biochemical Technology Co., Ltd.
+86-18621343501; +undefined18621343501 product@acmec-e.com China 33324 58
Aladdin Scientific
tp@aladdinsci.com United States 57505 58
SHANGHAI KEAN TECHNOLOGY CO., LTD.
+8613817748580 cooperation@kean-chem.com China 40066 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.
+8618950047208 ellena@amitychem.com China 43414 58
Shanghai Xinchem
+86-021-64606569 +8618049800532 xinchem@vip.126.com China 2918 58
DAYANG CHEM (HANGZHOU) CO.,LTD
+86-88938639 +86-17705817739 info@dycnchem.com China 53803 58
Shanghai Scibiotron Pharmaceutical Co., Ltd
+86-16621589600 contact@scibiotron.com China 5783 58

View Lastest Price from 2-METHYL-1-BUTEN-3-YNE manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
	2-METHYL-1-BUTEN-3-YNE pictures 2024-10-22 2-METHYL-1-BUTEN-3-YNE
78-80-8
$6.05 200g 95.0%-99.0% 100kg Career Henan Chemica Co
1-Butene-3-yne, 2-methyl- 2-methyl-1-buten-3-yn 2-Methyl-1-butenyne 2-Methylbutenyne 3-Methyl-3-buten-1-yne CH2=C(CH3)CequivCH Valylene 2-METHYL-1-BUTEN-3-YNE ISOPROPENYLACETHYLENE ISOPROPENYLACETYLENE Isopropenylancetylene 1-Buten-3-yne, 2-methyl- (6CI, 8CI, 9CI) 2-Methyl-1-buten-3-yen 2-Methyl-1-buten-3-yne,Isopropenylacetylene 2-Methyl-1-buten-3-yne, 98% 10ML 3-Methyl-1-butyne-3-ene 2-Methyl-1-buten-3-yne,98% 2-METHYL-1-BUTEN-3-YNE, 99%2-METHYL-1-BUTEN-3-YNE, 99%2-METHYL-1-BUTEN-3-YNE, 99%2-METHYL-1-BUTEN-3-YNE, 99% 2-Methyl-1-butene-3-alkyne 1-Buten-3-yne, 2-methyl- 2-METHYLBUT-1-EN-3-YNE 78-80-8 CHCCCH3CH2 H2CCCH3C8801CH H2CCCH3CCH Terminal Organic Building Blocks Building Blocks Alkynes
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