3,5-dimethyl-1-hexyn-3-ol

Structural formula
Structural formula without stereochemistry
General
Surname	3,5-dimethyl-1-hexyn-3-ol
other names	Surfynol 61 ( RS ) -3,5-dimethyl-1-hexyn-3-ol (±) -3,5-dimethyl-1-hexyn-3-ol Dimethylhexynol
Molecular formula	C 8 H 14 O
Brief description	colorless liquid with a camphor-like odor
External identifiers / databases
CAS number 107-54-0 EC number 203-500-9 ECHA InfoCard 100.003.183 PubChem 61018 Wikidata Q15632750
properties
Molar mass	126.20 g mol −1
Physical state	liquid
density	0.859 g cm −3 (25 ° C)
Melting point	−68 ° C
boiling point	150-151 ° C
Vapor pressure	6 hPa (20 ° C)
solubility	sparingly soluble in water (9 g l −1 at 20 ° C)
Refractive index	1.434 (20 ° C)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 226-301-311-319-331 P: 261-280-301 + 310-305 + 351 + 338-311
Toxicological data	200–500 mg kg −1 ( LD 50 ,  rat ,  oral ) > 1000 mg kg −1 ( LD 50 ,  rabbit ,  transdermal )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

3,5-Dimethyl-1-hexyn-3-ol ( Surfynol 61 ) is a nonionic surfactant . It is used as a foam inhibitor, wetting agent and in many cleaners, e.g. B. used as a silicon wafer cleaner. Surfynol 61 is highly volatile with a volatility number of 0.44 in relation to butyl acetate .

Surfynol 61 contains a stereogenic center. The technical product is a 1: 1 mixture ( racemate ) of two stereoisomers : ( R ) -3,5-dimethyl-1-hexyn-3-ol and ( S ) -3,5-dimethyl-1-hexyn-3 -oil.

Individual evidence

1. ↑ ^{a b c d} data sheet from Kremer ( Memento from November 1, 2013 in the Internet Archive ).
2. ↑ ^{a b c d e} data sheet 3,5- dimethyl- 1- hexyn- 3- ol, 98% from Sigma-Aldrich , accessed on October 30, 2013 ( PDF ).
3. ↑ ^{a b c} data sheet from Elma (PDF; 55 kB).