Refrigerant R290 Gas

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High pure grade R290 is used as temperature sensing medium. Premium grade and first grade R290 can be used as refrigerant and can replace R22.

Molecular Weight 44.9

Boiling Point, -42.2

Critical Temperature, 96.67

Critical Pressure, Mpa 4.25

Saturated Liquid Density,25,(g/cm3) 0.58

Specific Heat of Liquid,25,[KJ/(kg)] 1.64

ODP 0

GWP 0.01

Purity,% ≥99.8

Moisture,PPm ≤10

Acidity,PPm ≤0.1

Vapor Residue,PPm ≤100

Appearance Colorless,No turbid

Odor No Strange Stench

Q: Are the asphalt and peat kinds of vegetables have heavy metal?: Asphalt is composed of different molecular weight hydrocarbons and non-metallic derivatives of dark brown complex mixture, is a high viscosity organic liquid, was liquid, the surface was black, soluble in carbon disulfide. Asphalt is a waterproof moisture and corrosion of organic cementitious materials. Asphalt can be divided into coal tar pitch, petroleum asphalt and natural asphalt three: Among them, coal tar pitch is a by-product of coking. Petroleum asphalt is the residue after distillation of crude oil. Natural asphalt is stored in the ground, and some of the formation of ore or in the crustal surface accumulation. Asphalt is mainly used for coatings, plastics, rubber and other industries and pavement and so on.

Q: Will AsH3 (arsenic trioxide) is organic or inorganic: So the organic matter must contain the element is the C element

Q: What is the difference between organic matter and inorganic matter?: Organic compounds in addition to a few, can generally burn. Compared with inorganic matter, their thermal stability is relatively poor, the electrolyte is easy to heat decomposition. The melting point of organic matter is low, generally not more than 400 ℃. The polarity of organic matter is very weak, so most of the water is not soluble. The reaction between organic matter, mostly intermolecular reactions, often requires a certain activation energy, so the reaction is slow, often requiring catalyst and other means. And the reaction of organic matter is more complex, under the same conditions, a compound can often be several different reactions at the same time, generate different products.

Q: Sodium can be used to identify derivatives of hydrocarbons: The alcohol reacts with sodium. (Such as phenolic C6H5OH, cresol CH3C6H4OH, etc.), carboxylic acids (such as formic acid HCOOH, acetic acid CH3COOH, etc.) (description: hydroxyl groups in the carboxylic acid are hydroxyl groups in the carboxyl group) and hydroxyl groups containing polyhydroxyaldehydes and polyhydroxy ketones Such as glucose, fructose, etc.)

Q: What is the current status of carbon dioxide capture technology and how is it compared to plants that absorb carbon dioxide?: Landlord can check their own literature what. = For example, I think this review is very good. The Although it does not include relatively new progress, but I think it is quite good. The You see such an answer to the efficiency of how low ah not as good as their own to find the literature to see right

Q: What cells are composed of compounds: Water, various inorganic salts, sugars (mainly glucose and sugar), nucleotides, amino acids, lipids

Q: Inorganic chemistry employment direction? Current research direction: Inorganic chemistry is the science of the composition, nature, structure and reaction of inorganic matter, which is the oldest branch of chemistry. Inorganic substances include all chemical elements and their compounds, except for most of the carbon compounds. (In addition to carbon dioxide, carbon monoxide, carbon disulfide, carbonates and other simple carbon compounds are still inorganic substances, the rest are organic matter.)

Q: From the molecular level, are not all the energy obtained from the redox reaction?: Because one to be recycled, and secondly to be converted into electricity

Q: Why does the hydrocarbon derivative make the bromine water fade and the hydrocarbon can not: Should be able to ah and bromine water addition reaction and fade:

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