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Bis(2-ethylhexyl) phthalate (di-2-ethylhexyl phthalate, diethylhexyl phthalate, diisooctyl phthalate, DEHP; incorrectly — dioctyl phthalate, DIOP) is an organic compound with the formula C 6 H 4 (CO 2 C 8 H 17) 2. DEHP is the most common member of the class of phthalates, which are used as plasticizers.
This includes Bis(2-ethylhexyl) phthalate (DEHP or DOP), which has long been the most widely used phthalate, with commercial production dating back to the 1930s. [ 16 ] [ 17 ] In the EU, the use of DEHP is restricted under REACH and it can only be used in specific cases if an authorisation has been granted; similar restrictions exist in many ...
TBPH is the brominated analogue of bis(2-ethylhexyl) phthalate (DEHP). Much like TBPH, DEHP has been widely used as a plasticizer , however unlike TBPH, it is currently a restricted substance due to its endocrine disrupting properties and reproductive toxicity . [ 6 ]
A few examples of plasticizers that have been used with PPA include dimethyl phthalate, bis(2-ethylhexyl) phthalate, diethyl adipate, and tri-isononyl trimellitate (TINTM). In a recent study, the effect of two ether-ester plasticizers on the mechanical flexibility and photo-transience speed of cyclic PPA was investigated. [ 9 ]
Diisobutyl phthalate (DIBP) is a phthalate ester having the structural formula C 6 H 4 (COOCH 2 CH(CH 3) 2) 2. It is formed by the esterification of isobutanol and phthalic anhydride . This and other phthalates are used as plasticizers due to their flexibility and durability.
Bis(2-ethylhexyl) terephthalate commonly abbreviated DEHT (Dioctyl terephthalate or DOTP), is an organic compound with the formula C 6 H 4 (CO 2 C 8 H 17) 2. It is a non- phthalate plasticizer , being the diester of terephthalic acid and the branched-chain 2-ethylhexanol , which is often generically referred to as octyl.
The enzyme bis(2-ethylhexyl)phthalate esterase (EC 3.1.1.60) catalyzes the reaction bis(2-ethylhexyl)phthalate + H 2 O 2-ethylhexyl phthalate + 2-ethylhexan-1-ol Action of the enzyme. This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds.
The irritants butyl acetate, diethyl carbonate, benzoic acid, quinoline, bis(2-ethylhexyl) phthalate, and 2,6-dimethyl phenol were present as undeclared ingredients in the e-liquid. [50] Hindering safety assessments of e-liquids is the fact that the precise ingredients of e-cigarettes and e-liquids are not known. [51]