hslg-tech

  Frequent detection of the photoinitiator isopropylthioxant (ITX) in baby milk, dairy products and cloudy fruit juices packaged in beverage cartons highlights the need for more regular screening of food products packaged in paper and cardboard. UV filters have been associated with exposure to sensitization, endocrine activity and cancer. In this study, researchers from the Technical University of Dresden (TU Dresden) and the German Food Law Enforcement Agency of Baden-Württemberg (CVUA) analyzed 310 packaging materials containing dry food products for the presence of 11 photoinitiators and amine synergists. Ultraviolet (UV) filters such as ITX and   benzophenone (BP) , previously found in food, are used in UV-curable printing inks and varnishes. Some UV filters such as BP require amine synergists to improve curing. BP has shown a positive response in uterine nutrition tests for estrogenic activity and is classified as a high yield chemical. Printing inks are currently not spe...

  Benzophenone is an organic compound with the molecular formula (C6H5)2C=O, which can be abbreviated as Ph2CO. Diphenyl ketone, as the nucleus of diaryl ketone, is an important synthetic intermediate in organic chemistry. use Benzophenone can be used as a photoinitiator for UV curing of varnishes in the ink, imaging and printing industries. Diphenyl ketone prevents the damaging effects of UV light on fragrances or colorants in products such as perfumes and soaps. It can also be added to plastic bags as a UV shielding agent. By using benzophenone, manufacturers can dispense the product into clear glass bottles or plastic. If benzophenone is not available, opaque or black outer packaging is required. synthesis Diphenyl ketone can be prepared by reacting benzene with carbon tetrachloride to obtain diphenyl dichloromethane, and then continue to undergo hydrolysis reaction. [1] Or prepared by Friedel-Crafts acylation of benzene with benzoyl chloride in the presence of a Lewis acid cata...

  Analysis of the presence of benzophenone in industry, food and other consumer products   1. Property analysis Structure and molecular formula of benzophenone and relative molecular mass   C 13 H 10 O Relative molecular mass: 182.22   Chemical and physical properties of the pure substance ►Description: colorless crystalline solid, with geranium or rose odor ►Boiling point: 305.4 °C ►Melting point: 48.5 °C (alpha type) and 26 °C (beta type) ►Density: 1.111 at 18 °C ►Vapor pressure: 1.93 × 10 -3 mm Hg at 25 °C ►Refractive index: 1.6077 at 19 °C ►Solubility: almost insoluble in water, but soluble in organic solvents such as ethanol, acetone, ether, acetic acid, chloroform and benzene. ►Flash point: > 110 °C ►Stability: decomposition by heat produces toxic gas; reacts with strong oxidizing agents. ►Octanol/water partition coefficient: log K ow , 3.18 ( LOGKOW, 2010 ) ► Henry's law constant: 1.9 × 10 -6 atm.m 3 /mol at 25 °C   Analysis of benzophenone (a) Air The...

  Basalt fiber   (Basalt Fiber, referred to as BF) is a new type of inorganic environmentally friendly high-performance material, the color is generally brown, some like gold. It is composed of oxides such as SiO2, Al2O3, CaO, FeO, and a small amount of impurities, and each component in the fiber has its specific properties. Basalt continuous fiber As a reinforcing material, basalt fiber not only has good stability, but also has excellent mechanical properties and corrosion resistance. In addition, it has the advantages of good insulation, excellent thermal insulation and sound insulation performance, and good wave transmission performance. Because basalt ore itself gives basalt fiber many excellent properties, basalt fiber itself has high durability and excellent mechanical properties, and these advantages are very practical in military and civilian fields. At present, the fireproof cloth woven from basalt fiber has been used in the production of flame retardant and heat insu...