日日夜夜导航 伊人五月丁香猫咪久久 一本黄片在线免费观看 超级碰碰碰碰视频中文

Chinese name: ethanolamine; Foreign name: Ethanolamine Alias: monoethanolamine, 2-aminoethanol     CAS registration number: 141-43-5 Appearance: colorless liquid Water solubility: miscible with water     Chemical formula: H2NCH2CH2OH Molecular formula: C2H7NO Molecular weight: 61.0837

CAS registration number: 141-43-5 Appearance: colorless liquid Water solubility: miscible with water

Chemical formula: H2NCH2CH2OH Molecular formula: C2H7NO Molecular weight: 61.0837

Melting point: 10.5 ° C Boiling point: 170 ° C Freezing point: -5 ° C Refractive index: 1.4540

Dynamic viscosity (20 ° C): 24.14 mPa·s Flash point: 93.3 ° C

Properties: colorless viscous liquid with ammonia smell at room temperature, soluble in water, the solution is strongly alkaline, miscible with water, ethanol and acetone, slightly soluble in ether and carbon tetrachloride, at 25 ° C, The solubility in benzene was 1.4%, the solubility in diethyl ether was 2.1%, and the solubility in carbon tetrachloride was 0.2%. It can absorb carbon dioxide and hydrogen sulfide, and after heating, it can release the absorbed gas. Combustible, in case of fire, high heat, there is a danger of burning. The vapor is toxic. Some are hygroscopic. It has emulsification and foaming effect. It can form salts with inorganic acids and organic acids, and reacts with acid anhydrides to form esters. The hydrogen atom in the amino group may be replaced by an acid halide, an alkyl halide or the like.

1. Stable under normal temperature and pressure. It is a colorless and transparent viscous liquid at room temperature, and has hygroscopicity and ammonia odor. It is miscible with water, ethanol and acetone, and slightly soluble in ether and carbon tetrachloride. It can form salts with inorganic acids and organic acids, and reacts with acid anhydrides to form esters. It is hygroscopic and absorbs carbon dioxide in the air. Combustible, in case of fire, high heat, there is a danger of burning. Low toxicity. It is weakly alkaline. Incompatible materials: acids, acid anhydrides, acid chlorides, aluminum, copper. Chemical properties: Properties of alcohols and primary amines. It reacts with an acid to form an ammonium salt. Heating with fatty acids at high temperatures (140~160 ° C) or reacting with esters to form amides. The sulfate is heated with sulfuric acid and then converted to ethyleneamine by heating with sodium hydroxide. Reacts with formaldehyde to form a methylol derivative. It reacts with an aliphatic amine and an aromatic aldehyde to form a Schiff base. Alkylation occurs on the nitrogen atom by reaction with an alkyl halide. It reacts with ethylene oxide to form a polyester or a polyamide. Reaction with carbon disulfide to form dithiocarbamic acid. 2-Aminoethanol is combined with ammonia to form piperidine through a metal reduction catalyst. A complex salt is formed with a metal such as cobalt or copper.

2. The dilute solution of ethanolamine has very weak alkalinity and irritation, and it is irritating to eyes, skin and mucous membranes as its concentration increases. The oral LD50 of the mice was 700 mg/kg, and the oral LD50 of the rats was 2100 MG/KG. The maximum allowable concentration of the operating site is 6mg/m3. Wear protective equipment when handling. Wear protective equipment when handling. When splashing into the eyes, wash them immediately.

Monoethanolamine is mainly used as an intermediate for synthetic resins and rubbers, vulcanizing agents, accelerators and foaming agents, as well as pesticides, pharmaceuticals and dyes.It is also a raw material for synthetic detergents, emulsifiers for cosmetics, and the like. The textile industry is used as a printing and dyeing whitening agent, antistatic agent, anti-caries agent and detergent. It can also be used as a carbon dioxide absorber, an ink additive, and a petroleum additive. Monoethanolamine is widely used as a purification liquid for extracting acidic components from various gases such as natural gas. Piperazine hexahydrate can be obtained by cyclization and neutralization of monoethanolamine hydrochloride. The monoethanolamine hydrochloride is chlorinated with thionyl chloride and then substituted with sodium thiosulfate to obtain β-aminoethyl thiosulfate. This is a dye intermediate used to produce polycondensed turquoise 13G. The reaction of monoethanolamine with carbon disulfide produces intermediate thiothiazoles useful in the rubber and pharmaceutical industries.

Chinese name: sodium lauryl sulfate

English name: Sodium dodecyl sulfate (SDS)）

Aliases: coco alcohol (or lauryl alcohol) sodium sulfate, K12, foaming agents, etc.

Chemical formula: C12H25SO4Na

Molecular weight: 288.38

CAS No.: 151-21-3

HLB value: 40, belonging to hydrophilic surfactant

pH：7.5-9.5

Melting point (°C): 204-207

Relative density (water = 1): 1.09

Sodium lauryl sulfate is a white or light yellow micro-viscous material commonly used in the detergent and textile industries. It is an anionic surfactant. Soluble in water, good compatibility with anionic and nonionic, good emulsification, foaming, penetrating, decontaminating and dispersing properties, widely used in toothpaste, shampoo, shampoo, shampoo, washing powder, liquid Washing, cosmetics and plastic demoulding, lubrication and pharmaceutical, paper, building materials, chemical and other industries.

[Use 1] It is used as a detergent and textile auxiliaries, and also as a toothpaste foaming agent, a mine fire extinguishing agent, an emulsion polymerization emulsifier, a wool detergent, and the like.

[Use 2] Used as an anionic surfactant, emulsifier and foaming agent

[Use 3] GB 2760-96 is specified as a processing aid for the food industry. Foaming agent; emulsifier; anionic surfactant. Used in cakes, beverages, protein, fresh fruit, fruit drinks, edible oils, etc.

[Use 4] Used as an emulsifier for pharmaceuticals, cosmetics, and synthetic resins. Foaming agent for toothpaste and fire extinguisher. Used as a detergent for silky fine fabrics. Flotation agent for metal beneficiation.

[Use 5] used as a washing and textile auxiliaries, as a toothpaste foaming agent, fire extinguishing foam liquid, emulsion polymerization emulsifier, pharmaceutical emulsion dispersing agent, shampoo and other cosmetic products, wool detergent.

[Use 6] Biochemical analysis, electrophoresis, ion pair reagents.

[Use 7] Sodium lauryl sulfate is a commonly used ionic detergent, which can disintegrate cell membrane, bind to the hydrophobic part of membrane protein and separate it from membrane. High concentration of SDS can also destroy protein. Non-covalent bonds such as ionic bonds and hydrogen bonds, even changing the conformation of proteins. This property is commonly used for SDS gel electrophoresis of protein component analysis.

Chinese name: disodium edetate

English name: Ethylenediaminetetraacetic acid disodium salt acid disodium salt

Aliases: disodium edetate, disodium edetate, EDTA disodium, EDTA disodium salt

Chemical formula: C10H14N2Na2O8

Molecular weight: 336.21

CAS No.: 139-33-3

Melting point: 252 ° C

Water soluble: soluble in water

Appearance: white crystalline powder

Application: dyes, food, pharmaceuticals

Chinese name: hexadecanol

English name: Cetostearyl Alcohol

Chinese alias: cetearyl alcohol

English alias: Cetearyl alcohol; Crodacol CS90; Lanette O; Tego Alkanol 1618;

Tego Alkanol 6855

Chemistry: Cestestearyl alcohol

CAS號：8005-44-5

Molecular formula: C18H36O2

Structural formula: CH3(CH2)16COOH

Relative density: 0.9408 (20 ° C)

Melting point: 69~70°C

Boiling point: 383 ° C

Refractive index: 1.4299 (80 ° C)

A high-grade saturated fatty acid, industrial product in the form of white granules, a mixture of stearic acid and palmitic acid, and contains a small amount of oleic acid with a slightly buttery odor. Very slightly soluble in cold water, soluble in benzene, toluene, chloroform, carbon tetrachloride, carbon disulfide, amyl acetate, etc., also soluble in ethanol, acetone. Stearic acid is rarely found alone in nature.

Appearance: colorless, transparent, odorless, viscous liquid

Boiling point: 290.9 ° C at 760 mmHg

Melting point: 17.8 ° C (18.17 ° C, 20 ° C)

Density: 1.263-1.303g/cm3

Flash point: 177 ° C

Water solubility: miscible in any proportion

Chemical formula: C3H8O3

Molecular weight: 92.09

CAS No.: 56-81-5

1. Used to make glycerin, alkyd resin and epoxy resin.

2. In medicine, it is used to prepare various preparations, solvents, hygroscopic agents, antifreezes and sweeteners, and external ointments or suppositories.

3. Used in the coating industry to prepare various alkyd resins, polyester resins, glycidyl ethers and epoxy resins.

4. In the textile and printing and dyeing industry, it is used to prepare lubricants, moisture absorbents, fabric anti-shrinkage treatment agents, diffusing agents and penetrants.

5. It is used as a moisture absorbent and solvent for sweeteners and tobacco agents in the food industry.

6, has a wide range of uses in the paper, cosmetics, leather, photography, printing, metal processing, electrical materials and rubber industries.

7. Used as an antifreeze for automotive and aircraft fuels and oil fields.

8. Glycerin can be used as a plasticizer for new ceramics.

Appearance: Dipropylene glycol is an odorless, colorless, water-soluble and hygroscopic liquid at room temperature with a spicy sweet taste.

Chemical formula: C6H14O3

Molecular weight: 134.17

Boiling point (101.3 kPa) (°C): 295

Melting point (°C): -40

Flash point °C (closed): 118

Density g/cm3 (20 ° C): 1.0252

Refractive index: nD251.439

Viscosity 20 ° C): 107

Surface tension mN/m (25 ° C): 32.0

CAS: 110-98-5

1.Dipropylene glycol is the most ideal solvent for many flavors, fragrances and cosmetic applications. This material has good moisture, oil and hydrocarbon co-dissolving power, and has a mild odor, little skin irritation and low toxicity. The isomers are evenly distributed and the quality is excellent;

2.Dipropylene glycol can also act as a coupling agent and humectant in a variety of different cosmetic applications. In the field of perfumes, the use ratio of dipropylene glycol exceeds 50%. In other applications, the use ratio of dipropylene glycol is generally within 10% by weight. Some specific product applications include: curling fluids, skin cleansers (cold creams, shower gels, body washes and lotions) deodorants, facial, hand and body skin care products, moisturizing skin care products and lipsticks;

3.Dipropylene glycol is also used in the production of unsaturated resins and saturated resins, and the resins produced therefrom have superior flexibility, crack resistance, and weather resistance. The product has long-term yellowing resistance properties.

4.Used as cellulose acetate; nitrocellulose; shellac varnish; solvent for castor oil. It can also be used to make plasticizers, fumigants, synthetic detergents, etc.

Fatty alcohol polyoxyethylene ether (AEO), also known as polyoxyethylene fatty alcohol ether, is mainly divided into three models: AEO-3, AEO-7, and AEO-9. It is the fastest growing and most widely used variety of nonionic surfactants. It is formed by the condensation of polyethylene glycol (PEG) with fatty alcohols.

Chinese name: fatty alcohol polyoxyethylene ether; foreign name: Primary Alcobol Ethoxylate

Molecular formula: C12H25O.(C2H4O)n

Molecular weight: 1195.55

CAS: 68131-39-5

Melting point: 41-45 °C (lit.)

Boiling point: 100 °C (lit.)

Flash point: >230 °F

The number of ethoxy groups in the fatty alcohol polyoxyethylene ether molecule can be artificially adjusted during the synthesis process, so that a series of nonionic surfactants with different properties and uses can be obtained. Fatty alcohol polyoxyethylene ethers are the most important class of nonionic surfactants. The ether bond in the molecule is not easily destroyed by acid or alkali, so the stability is high, the water solubility is good, the electrolyte is resistant, the biodegradability is easy, and the foam is small. In addition to its extensive use in the textile printing and dyeing industry, it is also widely used to compound low foaming liquid detergents.

The fatty alcohol polyoxyethylene ether has good compatibility with other surfactants. It is not sensitive to hard water and has good low-temperature washing performance, but its solubility will gradually decrease as the water temperature increases. The fatty alcohol polyoxyethylene ether is hydrolytically stable in the range of pH 3-11.

1. Washing industry as a nonionic surfactant, emulsification, foaming, decontamination. It is the main active ingredient of hand soap, laundry detergent, shower gel, washing powder, detergent and metal cleaner.

2. Textile printing and dyeing industry as a textile printing and dyeing auxiliary, emulsification: emulsified silicone oil penetrant leveling agent polypropylene oil agent

3. The paper industry as a deinking agent, a blanket detergent, and a de-resin.

4. Others such as pesticide emulsifiers, crude oil demulsifiers, lubricating oil emulsifiers, etc.

5. AEO3 (MOA3) can be used as a water-in-oil emulsifier and is the main raw material for high-efficiency detergent fatty alcohol polyoxyethylene ether sulfate (AES).

6. AEO7 can be used as a disinfectant, degreaser, and laundry detergent.

7. AEO9 is mainly used as a wool detergent, a woolen industrial degreaser, a fabric detergent and a liquid detergent active component, and is generally used as an emulsifier in the industry.

NATROSOL? 250 Hydroxyethyl Cellulose (HEC) is a series of yellowish powder products that are easily dispersed and dissolved in cold water and hot water to form aqueous solutions of different viscosities. According to chemical structure, they are of different chain lengths. A cellulose derivative obtained by etherification to give hydroxyethyl ether to obtain some excellent physical and chemical properties.NATROSOL? 250 can be used as a thickener and rheology modifier to protect glues, water preservatives, stabilizers and suspension aids. It is widely used in some applications where nonionic materials are particularly needed.

Different models of NATROSOL? 250 have the following differences: aqueous solution viscosity, hydration behavior, biostability and particle size distribution.

- "R" type products have a surface treatment.

This surface treatment prevents agglomeration immediately when the powder is added to water. The aqueous solutions of the following models are also suitable for:

-B-grade products (eg: NATROSOL? 250HBR).This series has good resistance to biological and chemical degradation. NATROSOL? 250 Viscosity Specification, 25°Cmpa.s (Method N5-5)

NATROSOL? 250 Hydroxyethyl Cellulose is a granular powder that, when dissolved in water, exhibits a clear solution with pseudoplastic fluidity. At neutral pH and room temperature, NATROSOL? R-type products can be used as non-caking dispersion to provide good dissolution conditions. Its aqueous solution is not affected by high concentrations of water-soluble inorganic salts. Not for the mild acid and alkali.

Based on the non-ionic nature of NATROSOL, it is compatible with many substances, including polymer emulsions, natural and synthetic gums, emulsifiers and defoamers.

NATROSOL? 250 is a high performance nonionic thickener, water preservative that can be used in all waterborne coatings, adhesives and other waterborne industrial products. The standard NATROSOL? 250 provides good performance. Flow performance. NATROSOL? B provides additional stability in environments that are susceptible to microbial damage.

NATROSOL? 250 is packaged in a multi-layer paper bag with a net weight of 25 kg and a package of 40 bags (1000 KG). Although NATROSOL? 250 is a non-corrosive powder, we recommend that users take a first-come, first-served approach. The product should be stored in its original packaging and placed in a dry, clean, and out of heat source. Due to its water absorption, the packaging method has been protected against moisture. However, in a non-dry environment, the moisture content of the product may still rise.

Chinese name: 1,2-propanediol; 1,2-dihydroxypropane; propylene glycol; α-propylene glycol

English name: 1,2-Propanediol; 1,2-Dihydroxypropane;α-Propyleneglycol;Propylene glycol

Molecular formula: C3H8O2

Molecular weight: 76.09

Boiling point: 188.2 ° C

Melting point: -59 ° C

Viscosity: (20 °C) 60.5mpa.s

Flash point: 99oC

Density: 1.036

Refractive index: 1.431-1.433

CAS No.: 57-55-6

1. Flammable liquid. It is hygroscopic and does not corrode metals. It reacts with a dibasic acid to form a polyester, which reacts with nitric acid to form a nitrate ester, and reacts with hydrochloric acid to form a chlorohydrin. It is converted to propionaldehyde by heating with dilute sulfuric acid at 170 °C. Oxidation with nitric acid or chromic acid produces glycolic acid, oxalic acid, acetic acid, and the like. Reacts with an aldehyde to form an acetal. Dehydration of 1,2-propanediol produces propylene oxide or polyethylene glycol.

2. Toxicity and irritation are very small and no victims have been found so far.Rats were injected intravenously and intraperitoneally with LD507000~8000mg/kg and oral LD502800mg/kg. However, it has also been reported that when added in foods and beverages at a high dose, there is a risk of causing fatal false sputum and kidney disorders.

3. It exists in tobacco leaves and smoke.