Di- -ethyl phthalate

The same extraction technique may be followed by GC on a special, sufficiently rapid, column. A single plasticiser is identified by its retention data with, however, an imcertainty which may be practically eliminated by the use of a chromatogram obtained on a column of different polarity Figure 4.16 shows on the one hand the poor resolution of three plasticisers (a) di-ethyl phthalate, (b) di-methyl sebacate and (c) tributyl phosphate on a non-polar column and on the other hand, the good separation of these substances on a... 

The gas chromatographic procedures are suitable for quantitative determination of the most commonly used phthalates di-n-methyl phthalate (DMP), di- -ethyl phthalate (DEP), din-butyl phthalate (DBP), butylbenzyl phthalate (BBP), di-n-ethylhexyl phthalate (DEHP), and di-n-octyl phthalate (DOP) (Figure 26.2) (Table 26.1). 

Dimethyl peroxide Diethyl peroxide Di-t-butyl-di-peroxy phthalate Difuroyl peroxide Dibenzoyl peroxide Dimeric ethylidene peroxide Dimeric acetone peroxide Dimeric cyclohexanone peroxide Diozonide of phorone Dimethyl ketone peroxide Ethyl hydroperoxide Ethylene ozonide Hydroxymethyl methyl peroxide Hydroxymethyl hydroperoxide... 

Figure 1 Synthesis of l,4-di[2 -(2 -methyl-2 -propenate)ethyl]phthalate-2,5-dicarboxylic acid (/7-PMDM). 

Verton D, see 2,4-D Verton 2D, see 2,4-D Verton 2T, see 2,4,5-T Vertron 2D, see 2,4-D Vestinol 80, see Bis(2-ethylhexyl) phthalate Vestrol, see Trichloroethylene Vetiol, see Malathion Vetox, see Carbaryl Vidon 638, see 2,4-D Vinegar acid, see Acetic acid Vinegar naphtha, see Ethyl acetate Vinicizer 85, see Di- octyl phthalate Vinnapas 850, see Vinyl acetate Vinyl acetate H.Q., see Vinyl acetate Vinyl alcohol 2,2-dichlorodimethyl phosphate, see Dichlorvos... 

SYNS 1,2 -BENZENEDICARBOXYLIC ACID BI(2-METHOXYETHYL)ESTER (9CI) BIS(METHOXY-ETHYL) PHTHALATE BIS(2-METHOXYETHYL) PHTHALATE DI(2-METHOXYETHYL)PHTHALATE DMEP KESSCOFLEX MCP 2-METHOXYETHYL PHTHALATE PHTHALIC ACID BIS(2-iMETHOXYETHYL) ESTER... 

DIMETHOXY ETHYL PHTHALATE see DOF400 DI(2-METHOXYETHYL)PHTHALATE see DOF400 DIMETHOXYMETHANE see MGA850 DIMETHOXYMETHYLBENZENE see DOG700 DIMETHOXYMETHYLSILANE see MJE900... 

Di-ethyl hexyl phthalate (DEHP) is a softening agent commonly used in plastics such as polyvinyl chloride (PVC). It is found in products such as telephone cords, kidney dialysis machine tubing, medical plastic bags, shower curtains, vinyl wall coverings, and children s toys. 

DEHP (Di-Ethyl Hexyl Phthalate), Pages 733-734, Raja S. Mangipudy and Flarihara M. Mehendale SummaryPlus Full Text + Links PDF (59 K)... 

Safety Commission Consumer Products Copper (Cu) Corrosives Corticosteroids Cosmetics and Personal Care Products Cotinine Coumarins Creosote Cresols Cromolyn Cumene Cumulative Risk Assessment Cyanamide Cyanide Cyanogen Chloride Cyclodienes Cyclohexamide Cyclohexane Cyclohexene Cyclophosphamide Cyclosporine Cyfluthrin Cypermethrin Cysteine Cytochrome P-450 "2,4-D (2,4-Dichlorophenoxy Acetic Acid)" Limonene Dalapon DDT/DDE/DDD Decane DEBT (Diethyltoluamide) DEE Deferoxamine DEHP (Di-Ethyl Hexyl Phthalate) Delaney Clause Deltamethrin Deodorants Detergent Developmental Toxicology Dextromethorphan Diazepam Diazinon Diazoxide Dibenzofuran " Dib enz [a, h] anthracene" Dibromochloropropane Dibutyl phthalate Dicamba Dichlone Dichlorobenzene Dichloroethanes "Dichloroethylene, 1,1-"... 

The high thermal stability of the Deloxan ASP catalysts is also a key factor when looking at the achieved conversion rates in the esterification of phthalic anhydride with various alcohols, e.g. 1-octanol or 2-ethyl-hexanol, to yield di-octyl-phthalates (reaction 1) that are used as plasticizers. Product yields of > 99% for the diester are obtained for residence times between 30-50 minutes, at temperatures between 150°C and 180°C. 

SYNONYMS bis(2-ethyl)phthalate, DEHP, di(2-ethylhexyl)phthalate, DOP, octyl phthalate. 

The most common phthalate plasticisers are di-2-ethyl hexyl phthalate (DEHP), di-isodecyl phthalate (DIDP), and di-isononyl phthalate (DINP). Phthalate use has been controversial for years becanse of its snspected health hazards, especially in the case of DEEIP. In both wildlife and laboratory animals, phthalates have been linked to a range of reproductive health effects, with claims that most of them can function as an endocrine disrupting chemical (EDC), and also as cancer-causing agents (specifically in the liver and kidneys). Snch negative effects that phthalates are suspected to have on health have been attribnted to short ester chains (< C9). In fact, phthalates are already distributed worldwide in the environment. Some phthalates are even found in deep-sea jellyfish 1,000 meters below the surface of the North Atlantic Ocean. A number of studies have shown that most people are probably contaminated by substantial quantities of these chemicals, and yet for hnmans, no safe level of exposure to phthalates has been determined. There are also claims about the leaching of certain phthalate plasticisers from biomedical plastics (e.g., intravenous tubes) and hence directly into the patients bloodstream. In one snch stndy, it was shown that about 60% of the DEHP/DOP had migrated to the patient, while almost all of the bis (2-ethylhexyl) adipate (DOA) has been retained in the tnbe [28]. 

The phthalates impart flexibility to plastics, particularly to Tygon tubing. A common member of this family is dioctylphthalate, usually di-(ethyl-hexyl)phthalate, the... 

Distillation with reaction, where the normal process is coupled with a liquid phase reaction, is also interesting and esterifications of certain alcohols with acids are typical industrial applications. These include, among others the homogeneously catalyzed butyl acetate process and the production of the plasticizer di-octyl-phthalate from phthalic anhydride and 2-ethyl-hexanol. However, the subject which involves both product formation and separation aspects has not usually been treated in the literature relating specifically to "mass transfer with reaction". 

A preferred insect repellent is liquid A,A-diethyl-m-toluamide (A,Af-diethyl-3-methylbenzamide) for indoor or outdoor use. Other such chemicals include dimeth-ylphthalate, 2-ethyl-l,3-hexanediol, stabilene, indalone, di-Bu-phthalate, citronyl, alicyclic piperidines, permethrin, di-Bu-succinate, hexahydrodibenzofuran carboxaldehyde-butadiene-furfural copolymer, f-Bu-A,A-dimethyldithiocarbamate, 2-hydroxyethyl n-octyl sulfide, pyrethrins, diazinon (0,0-diethyl-0-[4-methyl-6-(propan-2-yl)pyrimidin-2-yl]-phosphorothioate), flMcar (2-methyl-2-(methylthio)-propanal-0-((methylamino)carbonyl)-oxime), pine oil, and anthrahydroquinones... 

The plasticiser used in the majority of flexible PVC currently used in medical applications is di-octyl phthalate (DOP) or more correctly di-(2 ethyl hexyl) phthalate (DEHP) and this is a prime example of a plasticiser which can be extracted under appropriate conditions. 

The main products formed from the hydrolysis of di- -butyl phthalate and ethyl acetate in NCW are the corresponding acids and alcohols. The formation of thermolysis products, such as alkenes and oxides of carbon, is considerably slower in NCW than when performed neat. 

Current studies indicate that the main phthalate plasticizers used, such as di-ethyl hexyl phthalate, may be the cause of sterility in men. 

C3a, C5a Activated complement factors 3 and 5 in its desarginine variation DEHP Di-ethyl-hexyl phthalate (also DOP)... 

Fig. 13.1 Polymers used for medical devices for dialysis and peritoneal dialysis. Polyurethane (PUR) is applied as potting material for capillary membranes, silicone tings guarantee a leak-age-free system, polycarbonate and polypropylene are used for casings, and a series of polymers are incorporated as membrane materials (P5M-polysulfone, P S-polyether-sulfone, PA-polyamide, PAAf-polyacrylonitrile, PMMA-polymethylmethacrylate, CIA-cellulose-tri-acetate). PUC-polyvinylchloride as a biomaterial for tubing needs plasticizers for its flexibility, such as D 7/P/DOP-di-ethyl-hexylphthalate/di-octyl-phthalate, TOTM-tn-octyl trimeUitate, DWCif-di-isononyl-cyclohexane...

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