Basic introduction of nonylphenol

Nonylphenol, also known as nonylphenol; English name for NonylPhenol (NP); molecular formula C15H24O. Physical and chemical properties: Nonylphenol is an important fine chemical raw materials and intermediates, the appearance of colorless or pale yellow liquid at room temperature, slightly phenol odor, insoluble in water, soluble in acetone. Mainly used in the production of surfactants, but also for antioxidants, textile auxiliaries, lubricants additives, pesticide emulsifier, resin modifier, resin and rubber stabilizers and other fields. Nonylphenol is an organic pollutant, a "sperm killer," said.

The use of nonylphenol

It is mainly used in the production of non-ionic surfactants, lubricating oil additives, oil-soluble phenolic resin and insulation materials, textile printing and dyeing, paper additives, rubber, plastic anti-aging antioxidant TNP, anti-static ABPS, oil and refinery chemicals, Petroleum products, clean dispersants and copper and rare metal floating selectors, also used in antioxidants, textile auxiliaries, lubricating oil additives, pesticide emulsifiers, resin modifiers, resins and rubber stabilizers and other fields for Ethylene oxide condensation agent for non-ionic surfactants, used as detergents, emulsifiers, dispersants, wetting agent, and further processed into sulfuric acid ester and phosphate ester, made of anionic surfactants. Also used in the production of detergents, antistatic agents, such as foaming agent.

The amount of the additive in the composite detergent was 1%, the addition amount in the liquid detergent was 10%, and the addition amount in the ultra-concentrated washing powder was 15%. In the pulp and paper, nonylphenol ethoxylates used as pulp with alkali extraction of resin excellent additives, can enhance the penetration of alkali, and promote resin dispersion; as papermaking low foam detergent and dispersant, can make paper The product is smooth and uniform. In addition, nonylphenol ethoxylates are used to remove waste newspaper inks.

In the building materials industry, nonylphenol ethoxylates for water-based paint, can play a role in emulsification, dispersion and wetting; for concrete aerosol, cement mortar or concrete can form a large number of micro-cells to improve its easy and Water resistance, improve the concrete's frost resistance and impermeability. Nonylphenol in China's pesticide emulsifier in the annual consumption of about 2000t, estimated in the future will maintain this level or a slight increase. Nonylphenol ethoxylates are also used in petroleum demulsifiers and leather processing aids.

In the electronics industry, nonylphenol is mainly used in the production of electronic circuits in the advanced laminated phenolic resin modified phenolic resin.

Nonylphenol toxicity hazards

The endocrine disrupting effect of nonylphenol on human and wild animals has aroused widespread concern. Nonylphenol (NP) is a recognized environmental hormone, it can simulate estrogen, the biological impact of sexual development, and interfere with the biological endocrine, reproductive system is toxic. At the same time, nonylphenol (NP) can accumulate in the body through the food chain, so studies have shown that even if the emission concentration is very low, but also very harmful.

Nonylphenol source of toxicity

Nonylphenol is mainly nonylphenol ethoxylate in the natural environment will be produced by the reaction of ethoxy, nonylphenol ethoxylate is a very important non-ionic surfactant. Toxic and harmful substances will be adsorbed in the textile products and other residues. (NP), perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are also frequently found in industrial wastewater.

From April to May 2011, Greenpeace purchased 78 samples of 15 apparel brands in 18 countries, including sportswear, casual wear and footwear, in 18 countries, including China, the United Kingdom and Argentina. The origin of these samples involved China, Bangladesh, Indonesia, Sri Lanka, Thailand and other 13 textile producing countries. Greenpeace sent the samples to qualified third-party laboratories for testing, and found that 15 of the 15 clothing brands, there are problems in the sample, 78 samples of 52 samples containing residual toxic and hazardous substances.

August 23, 2011, Greenpeace International released the latest research report "drug hidden in the clothing - the global brand clothing toxic and hazardous substances residue survey," pointed out that Adidas, Li Ning and other international and domestic brands of products containing "environmental hormone "Nonylphenol ethoxylates (NPE). Nonylphenol ethoxylates (NPEs) are often used as surfactants in textile production and are rapidly decomposed into nonylphenol (NP) when released to the environment.

Nonylphenol storage and transportation

Liquid nitrogen sealed packaging, stored in a cool, dry, ventilated warehouse, transport should be light to move light, to avoid sun and rain.

Nonylphenol detection

Nonylphenol by separation and enrichment, the determination of two main analytical methods: gas chromatography - mass spectrometry and high performance liquid chromatography.

The distribution of NP and NPnEO in sewage sludge and sewage sludge showed that the adsorption of NPnEO on the sludge was similar to that of NPNEO, and the adsorption was similar to Dubinin-Astakhov isotherm.

In sewage treatment plants (STPs), most of the NP and short-chain NPnEO tend to adsorb onto the sludge and enter the environment as the sludge is disposed. The degradation of NP was affected by temperature, the presence of plant, self-structure and so on.

1: 1: 1 (volume ratio) of the four strains of Bacillus spp., Pseudomonas sp., Nocardiasp. And Candida sp. In a complex water environment, the effective degradation of nonylphenol ethoxylates.