R141b for Cleaning
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000MT m.t./month
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1.Properties and Applications:
is a colorless and transparent liquid at room temperature.It has low ODP value and excellent chemical stability.Since its physical and chemical properties are similar to those of CFC-11,CFC-113,it can substitute CFC-11 as foaming agent for rigid or soft PU foam ,or CFC-113 as metal cleaner and solder -remover as well.
It has following characteristics:
1).Chemical Stability: It is stable while stored at roon temperature and will not decompose.
2).It can dissolve in most organic solvents, alcohol and ether.It has excellent compatibiity with grease and lubricant ,and no abvious effects on most polymers including plastic an rubbers.
3).HCFC-141b is not irritate to human skin and eyes ,but inhale HCFC-141b of high concetration eill cause anesthesia.
4).HCFC-141b is flammble ,and should be stored in well-ventilated place without flame.
2.Physical and Chemical Properties:
Chemical formula:CH3CFCL2
Molecular weight :116.9
Boiling point,°c:32.05
Critical temperature,°c:204.15
Critical pressure,MPa:4.25
Melting point °c:-103.5
Vapor pressure,25°c:707 mm Hg
Vapor density,(air=1):4
Flammablity limit(air%):7.6-17.7
Solubility in water,25°c:2.6g/l
3.Quality Specification
Purity,%:99.8
Moisture,ppm:30
Acidityppm:0.1
Vapor Residue:100
Appearance:colorless, not turbid
Odor:Odorless
1) Odor: slight ethereal
2) Form: liquefied gas
3) Color: clear, colorless
4) Purity: min. 99.9%
5) Acidity (as HCL): max. 1.0ppm
6) Virulence(TLV): none
7) Advantages: high efficiency, safe, energy saving, environmentally friendly,
economical
- Q: Are the asphalt and peat kinds of vegetables have heavy metal?
- Asphalt and its flue gas on the skin and mucous membranes are irritating, phototoxic and carcinogenic effects. China's three major asphalt toxicity: coal tar pitch> shale asphalt> petroleum asphalt, the former two are carcinogenic. Asphalt main skin lesions are: phototoxic dermatitis, skin lesions limited to the face, neck and other exposed parts; black disease, skin lesions are often symmetrical distribution in the exposed parts, was flaky, brown - dark brown - brown black; Acne; verrucous vegetation and heat burns caused by accidents. In addition, there are dizziness, head swelling, headache, chest tightness, fatigue, nausea, loss of appetite and other systemic symptoms and eye, nose, throat irritation symptoms.
- Q: Artemisinin is not a derivative of hydrocarbons
- Artemisinin is a colorless needle-like crystal obtained from the compound inflorescences Artemisia annua L., which is (3R, 5aS, 6R, 8aS, 9R, 12S, 12aR ) - octahydro-3,6,9-trimethyl-3,12-oxo-12H-pyran [4,3-j] -1,2-benzodiazepine-10 (3H) -one. Molecular formula for the C15H22O5.
- Q: What is "organic" and "inorganic" in chemistry?
- Carbon-free substances or carbon oxides, carbonates, bicarbonates are organic matter
- 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: Is the system name of a hydrocarbon derivative named if the question can be named according to the nomenclature of the alkane?
- Halogen can be named after the alkane, the other can not
- Q: From the molecular level, are not all the energy obtained from the redox reaction?
- You find the block out of the lithium battery thrown into the fire try ........ look at how the energy density
- Q: Why not ah?
- Ethylene is not a derivative of hydrocarbons, ethylene Chemical formula: CH2 = CH2
- Q: What is organic?
- Human beings have a long history of organic compounds. As early as the 17th century, humans could only obtain some organic compounds such as protein, fat, carbohydrate and dyes from animals and plants as food, food and clothing. 1828 German chemist Wilhelm (F Wohler) for the first time with inorganic acid ammonium nitrate synthesis of organic urea. After 1844, people have synthesized a large number of organic compounds such as methane, acetylene, acetic acid, oil and sugar, and since then humans have made organic chemistry into the synthetic era. The development of synthetic organic matter is clearly recognized: there is no clear boundary between organic matter and inorganic matter, but there are some differences in composition, structure and nature. Now people already know that organic compounds in the composition of most contain carbon, hydrogen, oxygen, nitrogen and other elements, a few also contain sulfur, phosphorus, halogen and so on. Any organic compound, its molecular composition contains carbon, the vast majority also contains hydrogen. Since the hydrogen atoms of the organic compound molecules can be replaced by other atoms or radicals, so many other organic compounds are derived, it is generally believed that hydrocarbons and their derivatives are known as organic compounds, referred to as organic compounds; The chemistry of compounds is called organic chemistry.
- Q: Is grease a polymer compound? Is it a derivative of saturated hydrocarbons?
- Not a polymer can not be considered a saturated hydrocarbon derivatives. Natural oils contain unsaturated structures
- Q: How the most primitive life on earth is produced under what conditions
- In the 4 billion years ago, the Earth's water environment, the atomic group into molecules, the formation of a new four-balance body, and the Earth in the formation process, has gathered a lot of interstellar organic molecules, these molecules combined into macromolecules, Of the gravitational field and the anti-gravitational field to find the appropriate combination of objects. Macromolecules, molecules and atoms are also dependent on the formation of the force field to find the appropriate combination of objects, the formation of a new complex four-force balance body, where the gravitational field to play a long-range attraction (5-20 atomic diameter), which It also limits the macromolecules to obtain the desired combination of objects on a large scale, so macromolecules are combined into a moving tissue form, the most primitive marine microorganism. The macromolecules that move can mainly use the method of orienting the electromagnetic force to gradually develop into the original tissue that can swim in the water, so they can obtain a large amount of food (four-force balance) and accumulate some molecules in the body , These molecules in the original microbial parent force field guidance, combined with the mother similar to the new micro-organisms, these primitive microorganisms is essentially a complex macromolecule formation of the four balance body, which is the prototype of biological gene replication.
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R141b for Cleaning
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000MT m.t./month
OKorder Service Pledge
OKorder Financial Service
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