Big positive news! These 22 chemical industry sectors are about to shine!

From a content perspective, it includes two subdirectories: the National Catalogue of Industries Encouraging Foreign Investment (National Catalogue), which applies nationwide and outlines policies to promote foreign investment in specific industries; and the Catalogue of Advantageous Industries for Foreign Investment in Central and Western Regions (Central-Western Catalogue), primarily targeted at the central-western and northeastern regions, serving as a regional policy framework to encourage foreign investment.

2025-10-24

After a sharp surge, it plunged—organic silicon oil byproducts' prices have been on a roller-coaster ride.

Industry insiders reveal that shipments of methyl and trimethyl silicones are currently sluggish, driving prices to continuously decline. As a result, since May, both siloxanes and silazanes have begun showing downward trends—siloxane prices have plummeted from over 110,000 yuan per ton in April 2018 to around 60,000 yuan today, while trimethyl silicones have dropped from more than 70,000 yuan to just over 30,000 yuan. In a matter of just a few months, prices have nearly halved. Meanwhile, organic silicon byproducts have seen price hikes that were truly unexpected—and now, the biggest pain is being felt by traders who previously stocked up at higher levels.

2025-10-24

Technical Misconceptions and Scientific Approaches in White Carbon Black Selection and General Processes for Silazane Treatment

It is well known that the strength of silicone rubber vulcanizates without reinforcing fillers is quite low. In practical applications, most silicone rubbers are used as composite materials reinforced with fillers. Commonly employed reinforcing fillers for silicone rubber include fumed silica or precipitated silica. Within a suitable range, the strength of vulcanized silicone rubber increases proportionally as the amount of silica filler rises. Notably, the surface of silica particles contains a significant number of silanol groups, which form hydrogen bonds with the organosilicon polymer. This interaction leads to thickening of liquid silicone rubber compounds and structuring of semi-solid formulations. As a result, the proportion of silica filler added is inherently limited.

2025-10-24

How to tell real silicone oil from fake?

Silicone oil is a linear polyorganosiloxane with varying degrees of polymerization. It is produced by hydrolyzing dimethyldichlorosilane with water to form initial oligomeric cyclic compounds. These cyclics are then cracked and purified via distillation to yield low-molecular-weight cyclic intermediates. Finally, by combining these cyclics with end-capping agents and a catalyst, a range of mixed products with different degrees of polymerization can be obtained. The silicone oil is subsequently refined through vacuum distillation to remove low-boiling components, resulting in the final product.

2025-10-24

Jiangxi Huahao Chemical Knowledge – Hexamethyldisiloxane

Hexamethyl disiloxane (silicone ether, MM capping agent) is a colorless, transparent liquid that is hygroscopic. It is insoluble in water but readily dissolves in a variety of organic solvents. This compound is widely used as a raw material for silicone oils, silicone rubber, pharmaceuticals, gas chromatography stationary phases, analytical reagents, and hydrophobic coatings. It is produced by the hydrolysis of trimethylchlorosilane.

2025-10-24

Precautions and Emergency Procedures for Hexamethyl Disiloxane

Immediately evacuate personnel from the leak-contaminated area to a safe zone and isolate the area, strictly controlling access. Eliminate any ignition sources. Emergency responders are advised to wear self-contained positive-pressure respirators and fire-resistant protective suits. If possible, stop the leak at its source to prevent it from entering confined spaces such as sewers or drainage ditches. For small spills: absorb the material using non-combustible materials like sand, vermiculite, or other suitable absorbents—and if safe to do so, burn it on-site. In case of large-scale leaks: create containment barriers or dig pits to collect the spill. Apply foam to suppress vapor emissions and reduce the risk of airborne hazards. Use explosion-proof pumps to transfer the substance into tank trucks or dedicated collection containers for recovery or disposal at an appropriate waste treatment facility.

2025-10-24

Detailed Introduction and Analysis of Heptamethyltrisiloxane

Heptamethyltrisiloxane contains highly reactive silicon-hydrogen bonds and serves as a fundamental raw material for synthesizing polyether-modified trisiloxanes, which are specialty-structured surfactants with versatile applications—such as in agricultural spray adjuvants and coating additives.

2025-10-24

Master the Basics of Chemical Industry Classification Firsthand

The chemical industry, chemical engineering, and chemical processes are all commonly referred to as "chemicals." The chemical industry encompasses sectors such as petrochemicals, agrochemicals, pharmaceutical chemistry, polymers, coatings, and specialty oils. Emerging in different historical periods, these fields each carry distinct meanings yet remain closely interconnected—deeply intertwined, mutually influential, and characterized by continuity. Over time, they have evolved to incorporate new ideas and applications. Broadly speaking, any process that employs chemical methods to alter the composition or structure of materials—or to synthesize entirely new substances—falls under the umbrella of chemical production technology, or simply chemical processes. The products generated through these processes are known as chemicals or chemical products.

2022-01-10