diacid


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diacid

[dī′as·əd]
(chemistry)
An acid that has two acidic hydrogen atoms; an example is oxalic acid.
References in periodicals archive ?
The facility is designed to produce biobased long chain diacids through the fermentation of the company's proprietary yeast, which has been engineered to use non-food biomass to produce high value chemicals.
8,535,649 B2; Chanel Parfums Beaute, Neuilly sur Seine, France, has patented cosmetic composition comprising, in a physiologically acceptable medium, at least one anhydrous gel having a viscosity of at least 180,000 cP*s at 25[degrees]C, which includes at least one oil and at least one copolymer of styrene and at least one olefin other than styrene; at least one ester obtained from a saturated or unsaturated and linear or branched aliphatic acid or hydroxy acid having from 8 to 30 carbon atoms, a linear or branched diacid having from 12 to 36 carbon atoms, and glycerol or a glycerol condensate; and optionally at most 10% by weight of wax(es).
The interference by eltrombopag is further complicated by the color of the drug (a diacid with carboxyl and phenolic functional groups), (3) which varies by solution pH and concentration--reddish brown at basic pH and yellow in acidic media (Figure, D-F).
Ground plant samples were digested in perchloric-nitric diacid (2:1 1N) mixture (Rhoades, 1982) to estimate Na, K, Ca and Mg by atomic absorption spectroscopy.
5), (6) In comparison with small molecule polycarboxylic acids, the molecular spacing between diacid groups is considerably larger.
Terra HS is based on polyamide 610, which is the polycondensation product of 1,6-hexamethylene diamine (H) and 1,10-decanedoic diacid (sebacic acid--S).
Vestamid Terra HS is based on polyamide 610, which is the polycondensation product of 1,6-hexamethylene diamine (H) and 1,10-decanedoic diacid (sebacic acid - S).
Degradation rate can be altered through changes in the hydrophobicity of the diacid building blocks like addition of hydrophilic monomer, such as sebacic acid [92].
Marley NA, Bennett P, Janecky DR, Gaffney JS (1989) Spectroscopic evidence for organic diacid complexation with dissolved silica in aqueous systems-l.
The diacid and most probably the dialcohol contribute to the major portion of --C[H.
A blend of a hydrophobic additive and a nylon polymer includes a nylon other than a copolymer formed front a cyclic lactam and a C6-10 diamine monomer or a C6-10 diacid monomer.
5, 519, 551, 589 and 642 nm while the diacid form shows absorbance maxima at 444, 590 and 645 nm.