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目前显示的是 一月, 2025的博文

Methylene Chloride for supply now with a cheap prcie

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Combustion (decomposition) Methylene Chloride products: carbon monoxide, carbon dioxide, hydrogen chloride, phosgene. Content analysis Dichloromethane can be separated by dibutyl phthalate (DBP), then detected by GC with TCD, and compared and quantified with standard dichloromethane. Reagents: carrier gas, helium (>99.5%); carrier is white diatomaceous earth 6201 (40-60 mesh) or equivalent; stationary phase, DBP (in ether); standard sample, chromatographic pure dichloromethane; instrument, gas chromatograph with TCD; column, 3m×3~4mm (inner diameter) stainless steel column. Conditions: stationary phase, 20%: DBP/6021 vaporization temperature, 100℃; detection temperature, 100℃; carrier gas flow, 70ml/min, column temperature 70℃; TCD bridge current, 200mA~ injection volume, <20μl. The retention time (R) of other chlorinated solvents related to dichloromethane is: 0.15 for methyl chloride; 0.34 for ethyl chloride; 0.59 for 1,1-dichloroethylene; 0.85 for propylene chloride; 1.86 for...

What are the chemical properties of Ethylene Glycol?

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 Properties: Colorless, transparent, viscous liquid  Ethylene Glycol Melting point: -13 °C (lit.) [2] Molecular weight: 62.068 Boiling point: 195-198 °C [2] Glass transition temperature: -120 °C [2] Vapor pressure: 0.08 mmHg (20 °C) [3] Density: 1.113 g/mL at 25 °C (lit.) [3] Refractive index: 1.4472 (λ: 589.3 nm; Temp: 20 °C) [2] Viscosity: 25.66 mPa.s (16 °C) Heat of combustion: 1180.26 kJ/mol Autoignition point: 418 °C Critical temperature: 372 °C Critical pressure: 7699 kPa Critical molar volume: 186 C3/mol Eccentricity factor: 0.27 Surface tension: 46.49 mN/m (20 °C) CAS Database: 107-21-1 [56] NIST chemical information: 1,2-Ethanediol (107-21-1) [56] EPA chemical information: Ethylene glycol (107-21-1) [56] NIST chemical information: 1,2-Ethanediol (107-21-1) EPA chemical information: Ethylene glycol (107-21-1) Solubility: Miscible with water/ethanol/acetone/pyridine acetate, etc., slightly soluble in ether, insoluble in petroleum hydrocarbons and oils, and can dissolve ...

There is a skill in using acetic acid

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Keep your eye fluids and exit quickly on the day of the closedest S 26. As necessary for using  Acetic acid , wear appropriate protective equipment, shoes, and a mouth. S45- In the event of an accident or if you become ill( if possible), seek medical attention right away( showing its brand if possible). S23- Prevent breathing in mist. With S24/25, avoiding touching your brain or your vision. lactic acid pieces  Acetic acid trustworthy, reliable data White, open water crystals crystallize in ice-like crystals at lower heat. smells bad. Inert in coal chemical liquids such as liquid, alcohol, liquid, and graphene tetrachloride, but impervious to healthy liquids like water and alcohol. People can develop burns when they are violent, alkaline, or extremely painful. When exposed to opened fire and great heat, Flammable, its haze and heat can create harsh combinations. There is a chance of an explosion when you come into contact with color acid, potassium oxygen, glycolic acid, or an...