n-Butyl acetat，Referred to as acetate for short, is an organic compound with a chemical formula for CH3COO (CH2) 3CH3. It is a liquid with a colorless fruity aroma. It is an excellent organic solvent. Vegetarian, polystyrene, methyl acrylic resin, chloride rubber, and various natural gums have good solubility. Flammable. Acute toxicity is small, but it has strong irritation to the eyes and nose.

2-Butanone is an organic compound with a chemical formula of CH3COCH2CH3 and a molecular weight of 72.11. For colorless transparent liquid, there is a scent similarity. volatile. Can mix with ethanol, ether, benzene, chloroform, and oil. Soluble in 4 parts of water, but when the temperature rises, the solubility is reduced, which can form a co -boiling mixture with water. Low toxic, half of the death (mice, meridian) 3300mg/kg. Flammable, steam can form an explosive mixture with air. High -concentration vapor is anesthesia.

Nonionic surfactants are surfactants whose molecules contain ether groups that do not dissociate in aqueous solution as the main hydrophilic groups, and their surface activity is reflected by neutral molecules. Nonionic surfactants have high surface activity, good solubilization, washing, antistatic, calcium soap dispersion and other properties, low irritation, and excellent wetting and washing functions. The applicable pH range is wider than that of general ionic surfactants, and it can also be used together with other ionic surfactants.

Epoxy resin is a high molecular polymer with a molecular formula of (C11H12O3)n, which refers to the general term for a class of polymers containing more than two epoxy groups in the molecule. It is the polycondensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, a variety of compounds containing active hydrogen can be used to open the ring, cure and cross-link to form a network structure, so it is a thermosetting resin.

R-410A is a near-zeotropic mixture of difluoromethane (CH2F2, known as R-32) and pentafluoroethane (C2HF5, known as R-125) used as a refrigerant in air conditioning applications. Unlike many halogenated alkane refrigerants, it does not deplete ozone, which is why it is widely used. in 1996, Carrier Corporation was the first to introduce R-410A-based residential air conditioners to the market. Today, R-410A is the refrigerant of choice for domestic and commercial air conditioning in Japan and Europe, replacing R-22.

Polytetrahydrofuran is a white waxy solid that is easily soluble in alcohols, esters, ketones, aromatics and chlorinated hydrocarbons, but insoluble in aliphatic hydrocarbons and water. When the temperature exceeds room temperature, it will become a transparent liquid.

Calcium fluoride is the main component of fluorspar or fluorspar, the chemical formula CaF2, colorless cubic crystal or white powder. The relative density is 3.18, the melting point is 1423℃, and the boiling point is about 2500℃

Acrylic acid is the simplest unsaturated carboxylic acid. Its molecular structure consists of a vinyl group and a carboxylic group. Pure acrylic acid is a clear, colorless liquid with a characteristic pungent odor, strong acid, corrosive. Soluble in water, ethanol and ether chemical activity. It is easily polymerized into a transparent white powder, and propionic acid is generated when reduced. It is produced by oxidation of acrolein or hydrolysis of acrylonitrile, synthesis of acetylene, carbon monoxide and water, or pressure oxidation of ethylene and carbon monoxide.

Nitric acid, is a strong oxidizing, corrosive unitary inorganic strong acid, is one of the six strong inorganic acids, but also an important chemical raw material, the chemical formula is HNO3, molecular weight is 63.01, and its aqueous solution is commonly known as nitric acid water or ammonia nitrogen water. In industry, it can be used to make fertilizers, pesticides, explosives, dyes, etc. In organic chemistry, the mixture of concentrated nitric acid and concentrated sulfuric acid is an important nitrification reagent. The hazard symbol is O (Oxidizing agent) and C (Corrosive). The anhydride of nitric acid is nitrogen pentoxide (N2O5).