Foaming Agent R142b

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142b refrigerant

it is used for temperature control of the media and aviation propellant intermediates. Also used as chemical raw materials.

Property of chloride:

Formula: CH3CCLF2

Molecular weight: 100.5

B. P., °C: -9.8

Critical temperature,,°C: 136.45

Critical pressure, MPa: 4.15

Critical density, g/cm3: 0.495

Liquid density, g/cm3 30°C: 1.096

Vapor pressure(absolute pressure),21.1°C MPa: 0.3

ODP: 0.0133

Quality standard:

Appearance: Colorless, no turbid

Odor: Odorless

Purity, ≥%: 99.9

Water, ≤%: 0.001

Acidity, ≤%: 0.0001

Residue on evaporation, ≤%: 0.01

Q:How the most primitive life on earth is produced under what conditions: These macromolecules are not in the modern sense of the protein and nucleic acid polymer, but a variety of amino acids, nucleosides, phosphoric acid, carbohydrates and some other small molecules of the disorder of the polymer, when the nucleoside and phosphoric acid composition of nucleoside Acid, and gradually form a nucleotide chain, the formation of these nucleotide chain of the amino acid on the formation of the field of binding force, and then assembled peptide chain. Or by the combination of a variety of amino acids into peptide chain formed by the force field on the surrounding nucleus formation field binding effect, and then assembled the nucleotide chain, with the formation of peptide chain and nucleotide chain longer and longer , The molecular weight is growing, and ultimately the formation of nucleic acids and proteins, nucleic acid and protein formation is the product of interaction with each other, is generated at the same time.

Q:What are the characteristics of organic compounds?: Organic compounds are usually referred to as carbon-containing compounds, or hydrocarbon-containing compounds and their derivatives are collectively referred to as organic matter. Organic compounds are generally insoluble in water and soluble in organic solvents with lower melting points. The vast majority of organic matter heat easily decomposed, easy to burn. The reaction of organic matter is generally slow and often accompanied by side effects, and there are many kinds of organic compounds, which can be divided into two major categories of hydrocarbon and hydrocarbon derivatives. According to the organic groups contained in the functional groups, divided into alkanes, alkenes, alkynes, aromatic hydrocarbons and alcohols, aldehydes, carboxylic acids, esters and so on. According to the organic carbon molecular structure, can also be divided into open chain compounds, carbocyclic compounds and heterocyclic compounds three categories.

Q:What is the difference between crude oil and asphalt?: Financial institutions, financial management, cash exchange, the exchange of foreign exchange private schools

Q:The role of aromatic hydrocarbons: Two cases: First, the name of monocyclic aromatic hydrocarbons, usually benzene ring for the mother, alkyl as a substituent. Second, the structure is more complex aromatic hydrocarbons, usually based on the hydrocarbon base, benzene ring as a substituent. Xylene, 2-methyl-3-phenylpentane, diphenylmethane, etc. For the naming of multifunctional compounds, attention is given to the priority order of the functional groups. The priority is preceded by the parent, usually: cations, COOH SO2H, COOR, COCl, CONH2, CN, CHO, CO, OH, SH, NH2, alkynes, alkenes, ethers, X, NO2, etc. [2]

Q:What is the isomeric structure of oxygen-containing derivatives?: Play the Transformers. As long as the same molecular formula, you can group out how many different structures, there are a number of isomers.

Q:Cracked: It is almost impossible for this problem to look at your reaction conditions. Generally speaking, the alkane reaction is mainly difficult to decompose directly into ions

Q:What is the current status of carbon dioxide capture technology and how is it compared to plants that absorb carbon dioxide?: The principle is probably that the middle of the thing is the electrode, and then the surface of the electrode there are some powerful catalyst in the sunlight can promote the oxidation of water or carbon dioxide reduction. The electrode can move the proton to the other side and not allow the product or product to move to the other side. After the proton has been transferred, the electrochemical process can be used to hydrogenate the carbon dioxide.

Q:Is steel not organic synthetic material?: Steel is a mixture, the vast majority of elemental iron, also contains other elements, carbon is mixed in the inside, and did not constitute a compound.

Q:How to do it? Solve Inorganic Chemistry: Inorganic chemistry is one of the earliest disciplines in the development of chemical science. It undertakes a major task of studying the composition, structure, properties and reactions of all elements and elements (except hydrocarbons and derivatives). The current development of inorganic chemistry has two distinct trends, that is, in the breadth of the broadening and depth of the advance. It is the three pillars of modern civilization

Q:What is the definition of organic matter: Organic matter usually refers to carbon-containing compounds, or hydrocarbons and their derivatives are collectively referred to as organic compounds.

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