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TDI-manufacture,factory,supplier from China
(Total 24 Products for TDI)
The toluene diisocyanate has 2,4-toluene diisocyanates and 2,6-toluene diisocyanate (TDI).
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There are two isomers of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate (TDI). According to the content of the two isomers, there are three standard products in the industry: (1) TDI-65 contains 2,4-TDI65%, 2,6-TDI35%; (2) TDI-80 contains 2,4- TDI80%, 2,6-TDI20%, more common; (3) TDI-100 contains 2,4-TDI100%. Carbon dioxide occurs with water effect. Easy to work with compounds containing active hydrogen atoms. Linear polyurethane or polyurethane resin with diol effect.
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Methyl Isobutyl Ether ether is also known as methyl isobutone, 4-methyl-2-pentanone.
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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. It is compatible with cellulose acetate and phrochloride cellulose.
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Physical nature
Colorless concierge fluids have a fierce scent. Insoluble in water, dissolved in ethanol and ether.
Benzyl alcohol, paf alcohol, 2-chloroethanol, ethylene glycol, furfural, dimethylformamide and acetonitrile were dissolved at room temperature. No corrosive metal.
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Solubility: Insoluble in water, acid and alkali, but soluble in organic solvents such as alcohol, ether and benzene.The preparation methods of biphenyl include the chemical composition method of making biphenyl through benzene pyrolysis and the separate extraction method of making biphenyl through various coal tar fractions. The mass fraction of biphenyl in coal tar is 0.20%-0.40%, and coal tar extraction method and chemical composition method coexist.
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The lactate dehydrogenase is converted to a left lactic acid during the fermentation process. Lactic acids are constantly occurring in general metabolism and motion, but its concentration generally does not rise. Only in the lactic acid occurs, lactic acid cannot be transported in time to increase. The lactic acid transport speed is affected by a series of factors, and includes a monocarboxy-dient, lactate dehydrogenase concentration and isomer form, and the oxidative capacity arranged.
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the crystal form of citric acid is exclusive due to distinctive crystallization conditions. it's miles barely weathered in dry air and hygroscopic in humid air. when heated, citric acid may be differentiated into diverse merchandise, that could react with acid, alkali, glycerin, and so on.
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Acrylic acid has a chemical formula of C3H4O2 and a molecular weight of 72.06.
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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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The solubility in water was 549 g / L at 20 ° C. Relative density 2.400 (deposit density: 0.7).
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Citric acid (CA), also known as citric acid, with the molecular formula C₆H₈O₇, is an important organic acid. It is colorless crystals, odorless, has a strong acid taste, is easily soluble in water, and is a natural preservative and food additive .
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citric acid is without problems soluble in water and ethanol, its solubility is 59% at 20℃, and the ph of its 2% aqueous solution is 2.1.
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Car urea is an essential product for heavy-duty diesel vehicles to meet the National IV emission standards. Vehicle urea refers to an aqueous urea solution with a urea concentration of 32.5% and ultrapure water as the solvent. The raw materials are urea crystals and ultrapure water. For diesel vehicles such as heavy trucks and passenger cars to meet the National IV emission standards, a suitable SCR system must be selected for exhaust gas treatment, and this system must use urea solution to treat nitrogen oxides in the exhaust gas.
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Hydrogen Peroxide Solution is an aqueous solution of hydrogen peroxide.
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Sodium peroxide is an inorganic substance with a chemical formula of Na2O2 and a molecular weight of 77.98. Beige powder or granules. The relative density is 2.8.
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Physical and chemical properties:
(1) Melting point (° C): - 2
(2) Boiling point (° C): 158 (no water)
(3) Relative density (water = 1): 1.46
(4) Relative density (air = 1): no material
(5) Solubility: dissolved in water, alcohol, ether, insoluble in benzene, petroleum ether
(6) Stability: unstable, protected from light
(7) Preventing the conditions of touch (taboo): strong acid, strong alkali, acyl chloride, alcohol, amine, flammable or combustible materials.
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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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Glycerol, also called glycerol, with the chemical formula c3h8o3, is colorless, odorless, sweet, with a clean and viscous liquid appearance. it's miles an organic substance that may take in moisture from the air, as well as hydrogen sulfide, hydrogen cyanide and sulfur dioxide. insoluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether and oils, it's miles the skeleton factor of triglyceride molecules.
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1. Used to produce 1,4-butanediol γ- Butyrolactone, tetrahydrofuran, succinic acid, unsaturated polyester resin, alkyd resin and other raw materials are also used in and pesticides.
2. Act as collector in metal beneficiation.
3. It is used in organic synthesis and also as an intermediate of synthetic fiber.
4. Maleic anhydride is an important basic raw material of unsaturated organic anhydride.
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Miscible with ether, diethylene glycol, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene and olive oil. It can react with hydroxyl-containing compounds, water, amines and compounds with active hydrogen atoms to generate carbamate, urea, semicarbazide, etc. Toluene is nitrated with mixed acid to obtain 2,4- and 2,6-dinitrotoluene, and then hydrogenated and reduced in the presence of nickel catalyst to obtain 2,4- and 2,6-diaminotoluene, which is then reacted with light in chlorobenzene solution. produced by gas reaction.
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Sulfur, white and shiny crystal compounds. The taste is bitter, density is 1.405, and the melting point is 180 to 182 ° C. Decomposition when it is hotter, soluble in water, can be dissolved in ethanol when heating, and is slightly dissolved in ether. During the melting, heterogeneity is partialized to form ammonium thiocyanomylisocyanomylocyne. The raw materials used to make drugs, dyes, resins, and plastic powder, and are also used as a vulcanized promoter for rubber, flotal agents for metal minerals.
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TDI is the abbreviation of toluene diisocyanate. TDI is a polycyanate widely used in industrial production. It is a polyurethane material and an important basic material. Mainly used to make flexible polyurethane foam, polyurethane elastomer, coatings, adhesives, etc.
TDI (toluene diisocyanate) is one of the commonly used polyisocyanate, and polyisocyanate is an important base material of polyurethane (PU). The TDI commonly used in the polyurethane industry is a mixture of 2,4-TDI and 2,6-TDI isomers, including three commonly used grades.
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.
Hydrogen peroxide is also known as hydrogen peroxide, and its chemical formula is H2O2. Its appearance is a light blue viscous liquid, which can be mixed with water at will. It is an oxide and reducing agent, but the effect of hydrogen peroxide in different situations There are also certain differences. Today, let us talk about the actual effects of hydrogen peroxide in different uses.
N-Methyldiethanolamine (MDEA) is commonly used to solve the acid gas containing hydrogen sulfide and CO2 in industrial production. It can absorb hydrogen sulfide and part of CO2.
Glycerol (also known as glycerol) is an organic substance that is colorless, odorless, sweet in taste, and has a clear, viscous appearance. It is miscible with any proportion of water, alcohol, amine and phenol, and the aqueous solution is neutral. Glycerin is a polyhydric alcohol humectant, and the hydroxyl groups form hydrogen bonds with water molecules in the molecular structure, which plays a good role in absorbing water and locking water. Glycerin has a wide range of uses, with more than 1,700 uses currently in use in food and industry.
Antioxidants can be used as hydrogen donors to scavenge free radicals generated during the chain initiation stage, thereby inhibiting or reducing the oxidation of oils. Therefore, in order to delay the oxidation of fats and extend their shelf life, the most common and effective way is to add antioxidants to the fats.
harmless. Nano-titanium dioxide is a stable metal compound with good stability.
It is necessary to reduce the harm of human beings. The best way is scientific application. Carbon dioxide actually has two sides. On the one hand, a greenhouse effect will be generated; on the other hand, it will benefit humanity, such as use as plant gas and fruit and vegetable prevention.
It has relatively low solubility to non-polar gases H2 and N2 during the absorption process, so the loss of pure gas is also small. This feature further constitutes its bright future as a decarburization solvent.
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