Strengthening Hydrogenated Oil Management in Hong Kong Region of my country
Time of Update: 2022-08-31
(Sun Guangmei) "China Food News" (July 12, 2021, 06 edition) (Editor-in-charge: Yang Xiaojing) In order to be consistent with the current international standards and practices, the Hong Kong government of China recently issued the Food and Drugs (Composition and Labelling) (Amendment) Regulation 2021, which stipulates that prepackaged foods containing hydrogenated Oils must be marked accordingly in their ingredient lists .
China-led release of the first international standard for new coronavirus nucleic acid detection
Time of Update: 2022-06-07
Recently, the State Administration for Market Regulation, on April 19, the International Organization for Standardization (ISO) issued the "In Vitro Diagnostic Testing System-Requirements for the Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) by Nucleic Acid Amplification Method" and recommendations" (ISO/TS5798:2022) international standard .
An article to understand the curing technology of one-component epoxy adhesives
Time of Update: 2021-06-16
When in use, the curing agent is activated by the external effects of moisture, light, heating, and pressure, and the curing and crosslinking reaction occurs with the epoxy group .
Sulfuric acid process titanium dioxide production clean and speed up
Time of Update: 2020-12-16
In the development of production at the same time, energy conservation, environmental protection and clean production research results are also very significant, a large number of obvious effects, advanced and applicable new energy conservation and environmental protection technology, new technologies in the industry has been popularized and applied, some technology has reached the domestic first, international advanced level, the whole industry, especially the sulphuric acid process is accelerating towards cleaner production direction.
Time of Update: 2020-11-22
reaction to sulfonyl (-SO 3H) into organic molecules is called sulfonation.
Fatty family compounds are usually sulfoned by indirect means.
Aromatic compounds are mainly replaced by direct sulfonation (pro-electric reaction).
The sulfonation reaction is generally carried out according to the following course.
The working principle of defoamers in coatings
Time of Update: 2020-11-11
2, the bubbly agent's principle of operation defrosting agent is in the foam thin layer formation stage or after the effect: dispersed even defrosting agent penetrates into the foam elastic film and distributed in the membrane, and through the reduction of surface pressure leads to the thin layer burst.
Amino acid paper layering
Time of Update: 2020-10-30
(1) first-way (acid phase) unfolded: to filter paper 19cm long side for high, with the stitch into a cylinder shape (note that the two sides of the paper do not meet), placed in a layer tank containing acid phase expander saturation 1h.