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Hydroxypropylmethylcellulose-manufacture,factory,supplier from China
(Total 24 Products for Hydroxypropylmethylcellulose)
Hypromellose (Hypromellose), also called hypromellose, is one of the non-ionic cellulose mixed ethers.
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Biphenyl, whose molecular formula is C12H10, is an important organic raw material and is widely used in the fields of medicine, pesticides, dyes, and liquid crystal materials.
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Appearance and traits: white crystals, extremely salty, non -toxic. It is easy to solverate in water, ether, glycerin and alkali, slightly soluble in ethanol, but insoluble in water -free ethanol, which is hygroscopic and easy to lump; New potassium salt is generated by reciprocating and disintegrating.
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Ammonia, also known as Amonia water, can be written as NH3(aq), which is an aqueous solution of ammonia, colorless, transparent and has a pungent odor.
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Phosphorus pentachloride is mainly used as a chlorination reagent for alcohols, carboxylic acids, amides, aldehydes, ketones, enols, and Beckmann rearrangement reagents. It is used as a chlorination agent and catalyst in organic synthesis, and is used in the production of medicines, dyes, and chemical fibers. It is also the raw material for the production of phosphazene chloride and phosphorus oxychloride.
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Glass material is referred to as a glass instrument. Many glass instruments are used in the laboratory, which is highly chemically stable, thermal stability, and well-transparent, and good insulation function.
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From the perspective of physics, the methods to eliminate foam mainly include placing baffles or filters, mechanical stirring, static electricity, freezing, heating, steam, radiation, high-speed centrifugation, pressure and decompression, high-frequency vibration, instantaneous discharge and ultrasonic (acoustic) Liquid control), etc., these methods promote the gas permeation rate at both ends of the liquid film and the drainage of the bubble film to varying degrees, so that the stability factor of the foam is smaller than the attenuation factor, and the number of foams is gradually reduced.
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The propanol, but also glycerol, chemical formula is C3H8O3, colorless, odorless, sweet, and appearance showing a clear liquid, is an organic substance, can absorb moisture from air, can also absorb hydrogen sulfide, hydrogen cyanide and sulfur dioxide .
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Appearance and properties: white or almost white fibrous or granular powder
Density: 1.39 g/cm3
Solubility: almost insoluble in absolute ethanol, ether, acetone; swelling in cold water into a clear or slightly dirty colloidal solution
Stability: The solid is flammable and incompatible with strong oxidants.
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N-butanol is an organic compound of the molecular formula C4H10O, which has a strong flame when the colorless transparent liquid is combined.
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It is also used in the manufacture of butyl acrylate, butyl acetate, ethylene glycol butyl ether, as an extractant for organic synthesis intermediates and biochemical drugs, and in the manufacture of surfactants.
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It is an efficient catalyst for removing mercaptan in light oil. Gasoline refined from sour crude oil contains higher mercaptan sulfur content.
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mercaptan wrapped in fuel is malodorous and corrosive, which reduces the lead content of gas. except, mercaptan is also an oxidation initiator, which can promote the oxidation and condensation of risky components in fuel to gel, resulting in terrible garage balance of gasoline. cobalt phthalocyanine sulfonate is an powerful catalyst for disposing of mercaptan sulfur from heavy oil, and it has the identical effect. whilst in use, dissolve the catalyst in 10% alkali solution, heat it slightly for a time frame, and stir to dissolve it before use.
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Colorless tasteless oily liquid, boiling point 343 ° C (0.101 MP), flash point (open cup) 204 ° C, freezing point -80 ° C, volatile rate 0.00009 g / cm, hour (105 ° C), hydrolysis rate 0.1% (100) ° C, 6 hours), soluble in most organic solvents. Resin compatible with polyvinyl chloride, polystyrene, vinyl chloride-vinyl acetate copolymer, nitrocellulose, ethylcellulose, polyvinyl butyal butyal.
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Hydrogen Peroxide Solution is an aqueous solution of hydrogen peroxide.
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It is a solvent for a variety of coatings and a raw material for preparing dibutyl phthalate, a plasticizer. It is also used in the manufacture of butyl acrylate, butyl acetate, ethylene glycol butyl ether,
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Potassium hydroxide is a common inorganic base with a chemical formula of KOH and a molecular weight of 56.1. It is a white powder or flake solid at room temperature.
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Hydrogen peroxide is used for oxygen bleaching or one-bath production and processing of annealing, boiling and bleaching. Hydrogen peroxide is often added to the water. Hydrogen peroxide is relatively stable in weakly alkaline or neutral conditions, and in weakly alkaline conditions. The addition of hydrogen peroxide has strong oxidizing properties, and the presence of heavy metal ions leads to early catalytic decomposition of hydrogen peroxide, which not only causes damage to hydrogen peroxide, but also damages fibers.
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Antifoaming agent refers to a substance that can reduce the surface tension of water, solution, suspension, etc., prevent the formation of foam, or reduce or eliminate the original foam. In the papermaking process, due to unreasonable sizing, poorly washed pulp, alkaline fillers used in acid systems, and various additives, foams will accumulate in the wet end of the papermaking system, resulting in the formation of foam dots on the paper.
Titanium dioxide itself has strong photochemical activity, and is prone to inactivation, yellowing, powdering, etc. under the sun, especially ultraviolet rays. A layer of inorganic material is wrapped on the surface of the titanium dioxide, which not only gets rid of the above defects, but also improves the characteristics of the titanium dioxide product.
Suitable for tiles, marbles, plastic finishes, adhesives, etc., which can reduce the amount of cement. The water retention of HPMC prevents rapid cracking of the slurry after coating and strengthens the strength of the slurry after hardening.
The solid defoamer is generally added in the form of spraying, and the viscosity of the coating is relatively large. In this case, if the solid defoamer particles are relatively fine, it is very likely that the particles cannot be effectively dissolved, which will eventually cause a large amount of The precipitation material.
Sodium persulfate is a white tasteless crystal or powder, also known as high sodium sulfate. Sodium sulfate is stable at room temperature and decomposes gradually at high temperature.
Antioxidant is a kind of plastic additives that can effectively reduce the self-oxidation reaction rate of plastics and promote the degradation of plastics.
Antioxidant is a kind of plastic additives that can effectively reduce the self-oxidation reaction speed of plastic materials and delay its aging degradation. It has a wide range of applications and is widely used in various polymer material products.
Xylene is a colorless and transparent solution. Xylene has a pungent taste and is flammable. It can be mixed with ethanol, chloroform or ether at will, and it is insoluble in water. Xylene belongs to a slightly toxic chemical substance in daily life, but it still has a certain degree of harm to all aspects of our body functions.
