NSC 44005

Name	3-methylpent-1-en-4-yn-3-ol
Synonyms	NSC 44005 AI3-23711 BRN 1740552 2-Vinyl-3-butyn-2-ol 1-Vinyl-1-ethynyltehanol 3-Methylpenten-1-in-4-ol-3 4-Methyl-1-penten-3-yn-3-ol 3-Methylpent-1-en-4-yn-3-ol 3-METHYL-L-PENTEN-4-YL-3-0L 3-Methyl-4-penten-1-yn-3-ol 3-methylpent-1-en-4-yn-3-ol 3-Methyl-pent-4-en-1-yn-3-Ol 3-Methyl pent-4-en-l-yn-3-0L Ethynyl Methyl Vinyl Carbinol 3-Methyl-4-pentene-1-yne-3-ol 1-Penten-4-yn-3-ol, 3-methyl- (3R)-3-methylpent-1-en-4-yn-3-ol (3S)-3-methylpent-1-en-4-yn-3-ol 4-01-00-02309 (Beilstein Handbook Reference)
CAS	3230-69-1
EINECS	221-770-6
InChI	InChI=1/C6H8O/c1-4-6(3,7)5-2/h1,5,7H,2H2,3H3/t6-/m1/s1

Molecular Formula	C6H8O
Molar Mass	96.13
Density	0.89 g/mL at 25 °C (lit.)
Melting Point	25°C (estimate)
Boling Point	63-65 °C/100 mmHg (lit.)
Flash Point	90°F
Vapor Presure	5.02mmHg at 25°C
Appearance	clear liquid
Specific Gravity	0.88
Color	Colorless to Light yellow to Light orange
pKa	12.53±0.29(Predicted)
Refractive Index	n20/D 1.446(lit.)
Physical and Chemical Properties	Liquid. Boiling point 60-63 °c/1.07kPa.

Hazard Symbols	Xn - Harmful
Risk Codes	R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
UN IDs	UN 1760 8/PG 2
WGK Germany	1
RTECS	SB4950000
HS Code	29052900
Hazard Class	3
Packing Group	III

NIST chemical information	Information provided by: webbook.nist.gov (external link)
Uses	3-methyl-1-pentene-4-acetyl-3-ol is an alcohol organic substance and can be used as an intermediate in organic synthesis. An intermediate of vitamin A acetate.
Production method	Calcium acetylene can be added with methyl ketene to generate calcium 2-ethynyl-1-vinylethanol, which is then replaced to obtain the product.