5-Decyne-4,7-diol

MIBK is a highly effective separating agent for metals from solutions of their salts and is used in the mining industries to extract plutonium from uranium, niobium from tantalum, and zirconium from hafnium (112,113). MIBK is also used in the production of specialty surfactants for inks (qv), paints, and pesticide formulations, examples of which are 2,4,7,9-tetramethyl-5-decyn-4,7-diol and its ethoxylated adduct. Other appHcations include as a solvent for adhesives and wax/oil separation (114), in leather (qv) finishing, textile coating, and as a denaturant for ethanol formulations. 

Many similar hydrocarbon duids such as kerosene and other paraffinic and naphthenic mineral oils and vegetable oils such as linseed oil [8001-26-17, com oil, soybean oil [8001-22-7] peanut oil, tall oil [8000-26-4] and castor oil are used as defoamers. Liquid fatty alcohols, acids and esters from other sources and poly(alkylene oxide) derivatives of oils such as ethoxylated rosin oil [68140-17-0] are also used. Organic phosphates (6), such as tributyl phosphate, are valuable defoamers and have particular utiHty in latex paint appHcations. Another important class of hydrocarbon-based defoamer is the acetylenic glycols (7), such as 2,4,7,9-tetramethyl-5-decyne-4,7-diol which are widely used in water-based coatings, agricultural chemicals, and other areas where excellent wetting is needed. 

Surfynol 104 is an acetylenic glycol, 2,4,7,9-tetramethyl-5-decyne-4, 7-diol [126-86-3] marketed by Air Products and Chemicals, Inc. 

Tetramethyl-5-decyne-4,7-diol, l 249t effective surfactant for coatings, 7 124... 

The 2,4,7,9-tetramethyl-5-decyne-4,7-diol mixture which belongs to the new group of polyethoxylated non-ionic gemini surfactants was examined by APCI-FIA-MS-MS(+). The [M + NH4]+ homologue ion at m/z 640 (number of PEG units x +y = 9) of the Surfynol 440 blend was fragmented in CID experiments on a TSQ. The product ion spectrum of this homologue is presented in Fig. 2.9.42. 

Tm Ts TAB TAED TBP TBT TCBT TCEP TeBT TIC TMDD TMSH TOC TOM TPDB, TXIB Trisnorhopane Trisnomeohopane Tetrapropylene-based alkylbcnzenes N,N,N, N -Tetraacetyl ethylenediamine Tributyl phosphates Tributyl tin T etrachlorobenzyltoluenes Tris(2-chloroethyl)phosphate Tetrabutyl tin Total ion chromatogram 2,4,7,9-Tetramethyl-5-decyne-4,7-diol T rimethylsulfoniumhydroxide Total organic carbon Terrestrial organic matter 2,4,4-Trimethylpentane-1,3-dioldi-/.vo- butyrate... 

Part I of our study (Dsikowitzky et al. 2004a chapter 3.1.1) revealed the presence of a wide spectrum of low-molecular weight organic compounds which were detected in Lippe river water samples. For a more detailed study, fourteen contaminants of special interest were quantified in four water sample sets and are presented here. These were compounds which have rarely been noticed as aquatic contaminants so far (e.g. TXIB (2,2,4-trimethyl-1,3-pentanedioldi-Ao-butyrate), TMDD (2,4,7,9-tetra-methyl-5-decyne-4,7-diol), triphenylphosphinoxide) or which were interesting because of their application (e.g. pharmaceuticals). 

Recovery experiments 2,4,7,9-Tetramethyl- 5-decyne-4,7-diol Tri-n-butyl- phosphatel Tris(2-chloroethyl- phosphate)... 

For 2,4,7,9-tetramethyl-5-decyne-4,7-diol the information derived from the stable carbon isotope ratios are also limited as the result of a non... 

The isotopic analyses applied to the water samples derived from the Lippe river longitudinal profile comprised main contaminants as illustrated above and described intensively in chapter 3.1.1. In detail stable carbon isotope ratios of tri-n-butyl phosphate (TBP), tris(chloroethyl)phosphate (TCEP), 2,4,7,9-tetramethyl-5-decyne-4,7-diol (TPDB), di- -butylphthalate, bis(2-ethylhexyl)phthalate (DEHP), galaxolide, tonalide, and squalene were determined. Further on, the internal standard d34-hexadecane was analysed simultaneously. Noteworthy, several compounds presented were also determined in the Rhine river samples. All results are summarized in Figure 7. 

This synthesis is usually carried out in the presence of alkaline catalysts. The catalyst is neutralized and at least partially remains in the final product. Primary Cg-Cig long-chain alcohols are generally used for ethoxylation. The alcohols may be of synthetic (Ziegler or oxo alcohols), vegetable and animal origin. Other hydroxo compounds can be subjected to ethoxylation, for example diols, such as 2,4,7,9- tetramethyl-5-decyne-4,7-diol ( Surfinol ), vegetable sterols, lanoline fractions enriched by sterols and fatty alcohols [34]. Ethoxylated alcohols and mercaptanes modified by a subsequent addition of propylene oxide or ethoxylated and propoxylated alcohols mentioned before (section 1.2.2) are of some industrial importance. 

CAS 126-86-3 EINECS/ELINCS 204-809-1 Syrtonyms Acetylenic glycol 2,4,7,9-Tetramethyl-5-decyn-4,7-diol 2,4,7,9-Tetramethyl-5-decyne-4,7-diol ClassiTication Unsaturated alcohol Empirical ChHjsOj... 

Ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyn-4,7-diol. See PEG tetramethyl decynediol... 

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