The toluene diisocyanate has 2,4-toluene diisocyanates and 2,6-toluene diisocyanate (TDI).

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.

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.

its density is 1.542g/cm3, its melting point is 153-159℃, and water and carbon dioxide are differentiated and launched above a hundred seventy five℃. 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.

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. Generally, the concentration of lactic acid in the blood is from 1-2 mmol / L during non-exercise, and can rise to 20 mmol / L during intense exercise.

Ricia oil contains a lot of ricic acid (more than 80%), so many unique properties: 1. It is easy to dissolve in ethanol, which is difficult to dissolve in petroleum ether. This feature is more likely to distinguish between castor oil from other grease. 2. The viscosity is much higher than that of the general oil, and 25 is 680 cps, the viscosity index 84, the friction coefficient is very low (0.1). The fluidity of castor oil is good, and the refined castor oil can still flow in -22. 3.

Antioxidant is a kind of chemical substance. When it is only a small amount in the polymer system, it can delay or inhibit the progress of the polymer oxidation process, thereby preventing the aging of the polymer and prolonging its service life. It is also called " Anti-aging agent".

Aspirational antioxidants should have the following conditions: ①Should have high anti-oxidation ability; ②Good compatibility with resin, no precipitation; ③Good processing function, non-volatile and non-decomposing at the processing temperature of high polymer; ④Good resistance to extraction, insoluble in water and oil; ⑤The color of itself is best to be colorless or light-colored, so as not to pollute the product; ⑥Non-toxic or low-toxic; ⑦Low price. In fact, any kind of antioxidant can not fully meet these conditions.

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.

Dissolving function: soluble in water and some solvents, such as ethanol/water, propanol/water in appropriate proportions. The aqueous solution has surface activity. High transparency and stable function. Different standard products have different gel temperatures and solubility changes with viscosity. The lower the viscosity, the greater the solubility. Different standards of HPMC have different functions. The dissolution of HPMC in water is not affected by pH.

Molecular weight: 65.39 Grade: 5N MDL number: MFCD00011291 EC number: 231-175-3

M-xylene is an organic compound with a molecular formula C8H10, a molecular weight of 106, a colorless concussion liquid, a odor like toluene.

Methacrylic acid is colorless crystal or transparent liquid with pungent odor. Soluble in hot water, soluble in most organic solvents such as ethanol and ether. Easily polymerized into water-soluble polymers. Combustible, there is a danger of burning in case of high heat and open flame, and it can produce toxic gas when heated.

It is an efficient catalyst for removing mercaptan in light oil. Gasoline refined from sour crude oil contains higher mercaptan sulfur content.

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.

In fact, any kind of antioxidant can not fully meet these conditions. Therefore, in actual application, it is often based on the variety, use and processing method of engineering plastics, using the strengths of various additives and cooperating to produce synergistic effects.

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. Therefore, urea solution for vehicles has become an essential product for heavy-duty trucks and passenger cars to meet the National IV emission standards.

This product is the standard configuration of SCR technology, the solution concentration is 32.5% 0.7%, which can effectively reduce exhaust pollution and ensure engine efficiency ;8-stage pretreatment + RO reverse osmosis technology + EDI electrodeionization water purification technology + high-precision filtration and purification to ensure the purity of the solution from the source, Delay SCR scaling, protect the urea pump and pipeline; select ultra-high-purity urea particles, made through multiple purification processes, long-term maintenance of the system and catalyst activity, and prol

The octane is the most important quality indicator of the vehicle gasoline.

Appearance and properties: colorless liquid, almost odorless Molecular weight 90.12 Vapor pressure 0.51 kPa/20℃ Flash point: 43℃ Melting point -70°C boiling point: 135.1°C solubility can be miscible with water and most organic solvents such as ethanol Density (D4) 0.925-0.935

Castor oil is the triglyceride of fatty acid, and castor oil is present in the seeds of castor oil, and its content is 35%~57.

Appearance: Light yellow to white granular crystals (semi-circular) white to light yellow loose crystals, heating is made black. Microfincture. Content: ≥ 85% Melting point: 98-102 ° C Dry loss: ≤0.2%

Solubility: insoluble in water, soluble in most organic solvents such as alcohol, ether.