PREFACE The Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65, California Health and Safety Code 25249.5 et seq.) requires that the Governor cause to be published a list of those chemicals " known to the state " to cause cancer or reproductive toxicity. The Act specifies that " a chemical is known to the state to cause cancer or reproductive toxicity...if in the opinion of t...

Yotis, William W. (Loyola University, Chicago, Ill.). Hydrolysis of synthetic esters by the antibacterial agent in serum. J. Bacteriol. 91:488-493. 1966.-An antistaphylococcal serum agent was assayed colorimetrically, manometrically, and titrimetrically for esterase activity. p-Nitrophenol acetate, triacetin, l-lysine methyl and ethyl ester, and norleucine methyl ester were hydrolyzed by the an...

The nitro phenol compounds are the largest and widely known group of industrial chemicals in use today. These compounds are organic molecules that contain at least one –NO2 group attached to the aromatic ring [1]. Nitrophenols are commonly used in pharmaceuticals, wood preservatives, rubber chemicals, dyes, pigments, explosives and industrial solvents [2]. O-nitrophenol (ONP) and m-nitrophenol ...

Bovine pancreatic deoxyribonuclease liberates p-nitrophenol from the 3'-group of deoxythymidine 3', 5'-di-p-nitrophenyl phosphate. A similar hydrolysis occurs with deoxythymidine 3'-p-nitrophenyl phosphate 5'-phsophate, but the rate is less than 2% of that with the di-p-nitrophenyl ester. The rate of formation of the p-nitrophenol, measured spectrophotometrically at 400 nm, varies linearly with...

We have previously described a sensitive bacterial test for dectecting carcinogens as mutagens. We have previously described a sensitive bacterial test for detecting carcinogens as mutagens. We show here that 89% (150/169) of commercial oxidative-type (hydrogen peroxide) hair dye formulations are mutagenic in this test. Of the 18 components of these hair dyes, nine show various degrees of mutag...

The mineralization of nitrobenzene was executed using an innovative method, wherein Ag/Cu2O semiconductors stimulated by visible light irradiation were supported with persulfate anions. Batch-wise experiments performed for the evaluation effects silver metal contents impregnated, concentrations and dosages on removal efficiency. physicochemical properties fresh reacted illustrated X-ray diffrac...

1. The detergent Triton X-100 activates UDP glucuronyltransferase from rat liver in vitro six- to seven-fold with p-nitrophenol as substrate. The enzyme activity when measured in the presence of Triton X-100 is increased significantly by pretreatment of male rats with phenobarbital for 4 days (90mg/kg each day intraperitoneally). If no Triton X-100 is applied in vitro such an increase could not...