Vilka halter av miljöfarliga ämnen hittar vi i miljön? ISBN 978

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Shorter ethoxylate chain alkylphenols have greater toxicity than longer ones. CCME describes Toxic Equivalent Factors from Environment Canada for NPnEO (1≤n≤8) These products are NP, nonylphenol ethoxylate (NP1EO), nonylphenol diethoxylate (NP2EO), nonylphenoxyacetic acid (NP1EC) and nonylphenoxyethoxyacetic acid (NP2EC). NPEs can be biodegraded through a mechanism of stepwise loss of ethoxy groups to form lower ethoxylated congeners, carboxylated products and NP. September 25, 2014 – EPA proposed a Significant New Use Rule to require Agency review before a manufacturer starts or resumes use of 15 nonylphenols (NPs) and nonylphenol ethoxylates (NPEs). This SNUR, when finalized, will provide EPA the opportunity to review and evaluate any intended new or resumed uses of these chemicals and, if necessary, take action to limit those uses. 2007-06-24 Exact matches only. Exact matches only .

Nonylphenol ethoxylate structure

An all-purpose cleaner is one that works on multiple surfaces and accomplishes many types of cleaning needs; a familiar example of an all-purpose cleaner is Formula 409®. Similarly, nonylphenol ethoxylate (NPE) is the most important alkylphenol ethoxylate. NPE accounts for approximately 85% of alkylphenol ethoxylate production (Anonymous 1997). An NPE is composed of a nonyl chain, usually branched, attached to a phenol ring (hydrophobe moiety) which is combined, via an ether linkage, with one or more ethylene oxide or polyoxyethylene units (hydrophile moiety). These products are NP, nonylphenol ethoxylate (NP1EO), nonylphenol diethoxylate (NP2EO), nonylphenoxyacetic acid (NP1EC) and nonylphenoxyethoxyacetic acid (NP2EC). NPEs can be biodegraded through a mechanism of stepwise loss of ethoxy groups to form lower ethoxylated congeners, carboxylated products and NP. Many products are non-alkyl phenol ethoxylate (APE) based, and readily biodegradable with low aquatic toxicity. Dow surfactants enable: Improved environmental profile, cleaning and wetting performance in household, industrial and institutional cleaning product formulations Alkylphenol Ethoxylate Concerns • Biodegradability • Toxicity of degradation products • Bioaccumulation Structure of 4 -nonylphenol and 17β-Oestradiol .

Dow surfactants enable: Improved environmental profile, cleaning and wetting performance in household, industrial and institutional cleaning product formulations Alkylphenol Ethoxylate Concerns • Biodegradability • Toxicity of degradation products • Bioaccumulation Structure of 4 -nonylphenol and 17β-Oestradiol . Exact matches only. Exact matches only .

Chemical hazard identification and assessment tool - CORE

D. Fortsättning på tabell Nonylphenol mono ethoxylate NP1EO. D. In aquatic environments, nonylphenols and nonylphenol ethoxylates structure along the coast of Finland is such that anoxic/hypoxic av M POLUKAROVA · 2018 — Aliphatic means that their structure represents either long chain or rings, with gen- For the EU production of the nonylphenol ethoxylates (NPEOs), one.

Vilka halter av miljöfarliga ämnen hittar vi i miljön? ISBN 978

lating. Nonylphenol ethoxylates (NPEs) represent the main product type in this group. They are used mainly in industrial and institutional cleaning, textile and leather processing, metal- working fluids, agrochemicals, emulsion polymerisation, paints, and in a host of smaller appli-cations such as oil field chemicals and paper production. NP nonylphenol NPE nonylphenol ethoxylates NPEC nonylphenol ether-carboxylate Oc oleochemical OECD Organization for Economic Cooperation and Development OPE octylphenol ethoxylate OSPAR Oslo and Paris Commissions P persistence PAA Preliminary Alternatives Assessment PBT persistent, bioaccumulative, and toxic Pc petrochemical Examples synthesized on an industrial scale include octyl phenol ethoxylate, polysorbate 80 and poloxamers. Ethoxylation is commonly practiced, albeit on a much smaller scale, in the biotechnology and pharmaceutical industries to increase water solubility and, in the case of pharmaceuticals, circulatory half-life of non-polar organic compounds. Vanillin ethoxylate (VAEO) is a novel substitute for NPEO and is quite similar to NPEO in structure; there is a risk that it has similar endocrine disrupting effects to NPEO. However, their effects on various nuclear hormone receptors have not been thoroughly examined.

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The nonyl group can be attached to the phenol ring at various locations, usually the 4- and, to lesser extent, the 2-positions, and can be either branched or linear. referring to the branched nonylphenol. CASRN 84852-15-3 corresponds to the most widely produced nonylphenol, branched 4-nonylphenol (referred to herein as NP). Note that NP is not a single chemical structure. It is a complex mixture of highly branched nonylphenols, largely mono-substituted in the ETHOXYLATED NONYLPHENOL is a polyether. May react exothermically with strong oxidizing agents.

nonylphenolethoxylate. nonylphenolpolyglycol ether. teric N. terics Ethoxylation is a chemical reaction in which ethylene oxide adds to a substrate.
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Their molecular structure contains repeated EO units as hydrophilic groups. Surfactant properties depend on EO length and type of hydrophobic combined groups. Nonylphenol ethoxylate (NPE) surfactants have been used in EO range from 4 to 70 units.

Vilka halter av miljöfarliga ämnen hittar vi i miljön? ISBN 978

Nonylphenol, branched, ethoxylated (> 1 < 2.5 mol EO). C&L Inventory, Registration dossier. study record(s). Description of key information. Based on the molecular structure of its constituents, NPEO is not considered to have oxidizing properties. Electronic structure and mesoscopic simulations of nonylphenol ethoxylate surfactants.

They are used in manufacturing antioxidants, lubricating oil additives, laundry and dish detergents, emulsifiers, and solubilizers.[2] These compounds are also precursors to the commercially important non-ionic surfactants alkylphenol ethoxylates and nonylphenol ethoxylates, which are Search results for Nonylphenol Ethoxylate at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare 4-nonylphenol (para-nonylphenol) with a varied and undefined degree of branching in the alkyl group, while very little straight chain nonylphenol is present (EU-RAR 1998). Similarly, nonylphenol ethoxylate (NPE) is the most important alkylphe-nol ethoxylate.