2,4,7,9-Tetramethyl-5-decyne-4,7-diol

CAS NO.：126-86-3
Empirical Formula: C14H26O2
Molecular Weight: 226.35
MDL number: MFCD00008942
EINECS: 204-809-1
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-20 20:09:13

What is 2,4,7,9-Tetramethyl-5-decyne-4,7-diol?

Chemical properties

2,4,7,9-Tetramethyl-5-decyne-4,7-diol is white to pale yellow low melting mass

The Uses of 2,4,7,9-Tetramethyl-5-decyne-4,7-diol

2,4,7,9-Tetramethyl-5-decyne-4,7-diol is an acetylene glycol derivative used in water-based coatings and has both antifoaming and surfactant properties. It is highly toxic and have been found in acrylic adhesives used for food packaging multilayers manufacturing.

The Uses of 2,4,7,9-Tetramethyl-5-decyne-4,7-diol

2, 4, 7, 9-tetramethyldec-5-yne-4,7-diol may be used to dope poly[9,9-bis(6′-(diethanolamino)hexyl)-fluorene],that acts as an interfacial layer in a heterojunction solar cell.

General Description

2, 4, 7, 9-tetramethyldec-5-yne-4,7-diol is a well-known acrylic adhesive. It has amphiphilic characteristics. It is used a dopant in a heterojunction solar cell, it assists in the formation of a homogeneous interfacial layer over the photoactive layer. Doping results in decreasing the absorption of photons in the underneath photoactive layer, thereby in enhancing the photocurrent density.

Hazard

In vivo experiments have shown that 2,4,7,9-Tetramethyl-5-decyne-4,7-diol induced lethargy in a lethal dose inhalation study in rats; tremors and convulsions were induced in a feeding study in dogs. It is an irritant to human skin and eyes, as well as a neurotoxic hazard to the rest of the central nervous system.

Flammability and Explosibility

Non flammable

Properties of 2,4,7,9-Tetramethyl-5-decyne-4,7-diol

Melting point:	42-44 °C(lit.)
Boiling point:	255 °C(lit.)
Density	0,89 g/cm³
vapor pressure	0.66Pa at 20℃
refractive index	1.4560 (estimate)
Flash point:	>230 °F
storage temp.	2-8°C
solubility	Chloroform (Slightly), Methanol (Slightly)
pka	12.92±0.29(Predicted)
form	Solid
color	White to Off-White
Water Solubility	1.7g/L at 20℃
BRN	1724053
CAS DataBase Reference	126-86-3(CAS DataBase Reference)
EPA Substance Registry System	2,4,7,9-Tetramethyl-5-decyne-4,7-diol (126-86-3)

Safety information for 2,4,7,9-Tetramethyl-5-decyne-4,7-diol

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H317:Sensitisation, Skin H318:Serious eye damage/eye irritation H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.