Nonylphenols can come in numerous structures, all of which may be considered alkylphenols. They are used in manufacturing antioxidants, lubricating oil additives, laundry and dish detergents, emulsifiers, and solubilizers. NP) is an estrogenic endocrine active chemical that is present in detergents and is known to contaminate food and drinking water. The aim of the present study was to evaluate whether 4-NP crosses the human placenta and if so, to what extent.
What is the mechanism of nonylphenol? How is nonylphenol produced? Molecular mechanism for the antiandrogenic action of nonylphenol has been reported. Nonylphenol has been reported as antiandrogen by using a yeast detection system.
NPEs are nonionic surfactants that are used in a wide variety of industrial applications and consumer products. Many of these, such as laundry detergents, are “down-the-drain” applications. Some others, such as dust-control agents and deicers, lead to direct release to the environment. Substance identity Substance identity. Avoid Hazardous Chemicals With Our Wide Range Of Optimized Ingredients, Effective At pH 7. The impacts of nonylphenol in the environment include feminization of aquatic organisms, decrease in male fertility and the survival of juveniles at concentrations as low as 8. A new version of an additive scheme for the prediction of gas chromatographic retention indices of the 2structural isomers of 4- nonylphenol , J. NPEs ( nonylphenol ethoxylates) break down in the environment into nonylphenol (NP), one of the most notorious examples of persistent, bioaccumulative and toxic chemicals (PBTs).
Widely recognized for extreme aquatic toxicity to fish and wildlife, NPEs and NP may also threaten the health of the developing fetus and young children. ETHOXYLATED NONYLPHENOL is a polyether. May react exothermically with strong oxidizing agents. L, 96h static (Pseudokirchneriella subcapitata) EC50: = 1. IDENTIFICATION COMMON NAME: TERGITOL NP- SUFACTANT SYNONYPoly(oxy-2-ethanediyl),. L, 72h (Desmodesmus subspicatus) LC50: = 0. Noun (plural nonylphenols) 1. Any of a family of closely related organic compounds, a subset of the alkylphenols, that are precursors to commercially important detergents.
Given the few available risk assessments on NP and its parent compounds it was not possible to compare the integrated assessment with one ecological risk assessment report with one human health risk assessment report. Presence of nonylphenol , octyphenol and bisphenol-A in two aquifers close to agricultural, industrial and urban areas. Lee Ferguson P, Bopp RF, Chillrud SN, Aller RC, Brownawell BJ. Biogeochemistry of nonylphenol ethoxylates in urban estuarine sediments.
About of the produced APEO are in fact NPEO. It is a mixture of isomers containing mainly p- nonylphenol. It is also used as a heat stabilizer and antioxidant for polymers.
This additive can act as a curing agent in epoxy resins. NONYLPHENOL prevents resinification of the polymer during manufacturing and storage. Certified Reference Material. Many alkylphenols are toxic to aquatic organisms, and the most toxic are those with a large alkyl chain, i. Number of Components Comps.
Univar Solutions offers a wide range of nonylphenol ethoxylates starting from mole of ethylene oxide and up to 1moles of ethylene oxide. They are known for their excellent detergency, outstanding wetting, versatile solubility characteristics, low odor, good rinse-ability, and exceptional handling properties. Predominantly acts as an accelerator for epoxy curing systems in CASE, also has applications in metalworking and lubricants.
Full service wholesale distributor of chemicals including nonylphenol ethoxylates. Types include NP- NP- NP- NP-1 NP-1 and NP-100. Other varieties of plasticizers and blends are also available.
These compounds are also precursors to the commercially important non-ionic surfactants alkylphenol ethoxylates and nonylphenol ethoxylates, which are. A surfactant, by the way, is a substance that lowers the surface tension between two liquids or a liquid and a soli giving nonylphenol ethoxylate the ability to disperse one form of matter into. Alkylphenols are a family of organic compounds obtained by the alkylation of phenols.
The term is usually reserved for commercially important propylphenol, butylphenol, amylphenol, heptylphenol, octylphenol, nonylphenol , dodecylphenol and related long chain alkylphenols (LCAPs).
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.