Delta(Sup2)-Dihydropyran-manufacture,factory,supplier from China

Products Description of Tetrahydropyran CAS#142-68-7Tetrahydropyran, also known as oxadiazine, is a six-membered oxygen-containing saturated heterocyclic ring. It is a colorless, flammable liquid at room temperature with a special smell. It is miscible in water, ethanol, ether, and other organic solvents. It generates explosive organic peroxides under light. It is prepared by hydrogenation of dihydropyran in the presence of Raney nickel or reaction of 5-dibromopentane and water in the presence of zinc oxide.

Products Description of Direct Red 23 CAS#3441-14-3 Purple-red powder. Moderately water-soluble, bright red when dissolved in water, its aqueous solution turns light blue when adding dilute sulfuric acid, produces wine-red precipitate when adding concentrated hydrochloric acid, and turns reddish orange-brown when adding concentrated alkali. Slightly soluble in ethanol and orange, insoluble in acetone.

Products Description of Cupric oxide CAS#20427-59-2Chemical formula Cu(OH)2. Molecular weight 97.56. Blue to blue-green gel or light blue crystalline powder, toxic. Relative density 3.37. Color darkens at 60-80℃. Insoluble in cold water, decomposes into copper oxide in hot water, dissolves in acid to form divalent copper salt, dissolves in excess concentrated alkali to form tetrahydroxy cuprate, dissolves in concentrated ammonia or potassium cyanide solution to form dark blue tetraamminecopper(II) dihydroxide solution or colorless potassium tetracyanocuprate(II) solution.

Products Description of AMBERLITE(R) XAD-4 CAS#37380-42-0Ion exchange resin is a kind of functional polymer that can exchange with ions of the same sign in aqueous solution. It is essentially a cross-linked polymer acid or polymer base. Phenolic cation exchange resin was first introduced in 1935, and industrial production began in Germany in 1939 and the United States in 1941. After World War II, polystyrene and polyacrylic acid ion exchange resins were put into production one after another. After the 1960s, macroporous ion exchange resins were developed.

POLY(DIMETHYLAMINE-CO-EPICHLOROHYDRIN) Chemical Propertiesdensity 1.1 g/mL at 25 °Crefractive index n20/D 1.427CAS DataBase Reference25988-97-0EPA Substance Registry SystemMethanamine, N-methyl-, polymer with (chloromethyl)oxirane (25988-97-0)Safety InformationHazard Codes XiRisk Statements 38-41Safety Statements 23-26-36/37/39WGK Germany 3Factory and Equipment ShowFast delivery timeInventory 2-3 working days New production 7-10 working days

Products Description of 2-Mercaptobenzothiazole CAS#149-30-4Pale yellow monoclinic needles or flaky crystals with an unpleasant odor.

Products Description of Octadecanethiol CAS#2885-00-9Octadecanethiol, molecular formula C18H38S.Octadecanethiol Chemical PropertiesMelting point 30-33 °C(lit.)Boiling point 204-210 °C11 mm Hg(lit.)density 0.847 g/mL at 25 °C(lit.)vapor pressure <0.5 hPa (20 °C)refractive index n20/D 1.3610Fp 55 °Fstorage temp. Store below +30°C.form Crystalline Solidpka10.49±0.10(Predicted)Specific Gravity0.832 (30℃)0.847color WhiteWater Solubility InsolubleBRN 1811934Exposure limitsNIOSH: Ceiling 0.5 ppm(5.9

Products Description of Vinylbenzyl chloride CAS#30030-25-2Chloromethylvinylbenzene can be used as an organic synthesis intermediate and a pharmaceutical intermediate, mainly used in laboratory research and development processes and chemical production processes.Vinylbenzyl chloride Chemical PropertiesMelting point -30°CBoiling point 229 °C(lit.)density 1.074 g/mL at 25 °C(lit.)vapor density 5.3 (vs air)vapor pressure 1 mm Hg ( 56.1 °C)refractive index n20/D 1.572(lit.)Fp 221 °Fstorage temp. -20°Csolubility Acetonitrile (Slightly

Products Description of p-Cymene CAS#99-87-64-isopropyltoluene is an organic compound with the chemical formula C10H14. It is a colorless and transparent liquid, insoluble in water, soluble in ethanol, ether, acetone, chloroform and other organic solvents. It is mainly used in organic synthesis and preparation of paint thinners.

Products Description of EDTA CAS#60-00-4Ethylenediamine can be obtained by cyclizing ethylenediaminetetraacetic acid with formamide. This is a drug primarily used to treat psoriasis, also known as psoriasis. But as an organic synthesis intermediate, it is not the main use of EDTA. EDTA and its salts can undergo complex reactions with a variety of metal ions to form a stable cyclic structure, which can effectively reduce or inhibit side reactions or harmful effects caused by metal ions.

Products Description of POLY(METHYLSILSESQUIOXANE) CAS#68554-70-1White powderPOLY(METHYLSILSESQUIOXANE) Chemical Propertiesdensity 1,08 g/cm3refractive index 1.42Fp >121°Csolubility Insoluble in water.form SolidSpecific Gravity1.08color Clear. White.EPA Substance Registry SystemSilsesquioxanes, Me (68554-70-1)Safety InformationRisk Statements 36/37/38Safety Statements 26-36/37/39TSCA YesFactory and Equipment ShowFast delivery timeInventory 2-3 working days New production 7-10 working days

Dimethyl carbonate  CAS#616-38-6Dimethyl carbonate is quickly referred to as DMC. At room temperature, it is a colorless and obvious liquid with a pungent smell with a relative density (D204) of 1.0694, a melting factor of four °C, boiling factor of 90.3 °C, the flash factor being 21.7 °C (opening) and being 16.7 °C (closed ) and the refractive index (nd20) being 1.3687.

Products Description of Sodium hexametaphosphateCAS#10124-56-8This product is a white crystalline powder with a specific gravity of 2.484 (20°C). It is easily soluble in water but insoluble in organic solvents and has a strong hygroscopic function.

Products Description of Cuprous bromide CAS#7787-70-4Cuprous bromide is white powder or cubic crystal, with a melting point of 498°C and a boiling point of 1345°C.

Products Description of Bismuth trioxide CAS#1304-76-3Yellow monoclinic crystals. Soluble in acid, insoluble in water and alkali. Can be reduced by carbon and hydrogen. Made by heating and decomposing bismuth nitrate. Used to make metallic bismuth, catalysts and bismuth oxide superconductors.Bismuth oxide is also known as "bismuth trioxide". Pure products include α-type, β-type and δ-type. α-type is yellow monoclinic crystal with a relative density of 8.9 and a melting point of 825℃. It is soluble in acid but insoluble in water and alkali.

Products Description of DIMETHYL DICARBONATE CAS#4525-33-1Dimethyldicarbonate (DMDC), also known as Vigorin, is a fruit juice beverage preservative permitted for use in my country's food additives standards (INS No. 242). At room temperature or even low temperature, DMDC has a strong killing ability against many contaminating bacteria in fruit juice beverages. Its antiseptic effect is closely related to the modification and inactivation of key enzyme proteins in the bacteria by DMDC.

Products Description of Sulfolane 99.5% CAS#126-33-0Sulfolane solvent has high solubility for aromatics, good selectivity, good thermal stability, low vapor pressure, low toxicity and no corrosion to carbon steel.

Products Description of Dimethyl Disulfide 99.5% MIN CAS#624-92-0Dimethyl disulfide is an organic compound with the chemical formula C2H6S2.Dimethyl disulfide Chemical PropertiesMelting point -85 °CBoiling point 109 °C(lit.)density 1.0625vapor density 3.24 (vs air)vapor pressure 22 mm Hg ( 20 °C)refractive index n20/D 1.525(lit.)FEMA 3536 | DIMETHYL DISULFIDEFp 76 °Fstorage temp. Flammables areasolubility 2.7g/lform LiquidSpecific Gravity1.0647 (20/4℃)color Clear yellowOdorat 0.10 % in propylene glycol.

Products Description of 1,8-Naphthalic anhydride CAS#81-84-5It precipitates needle-shaped crystals in ethanol and rhombus-shaped crystals in acetic acid.

Methylcyclopentadienyl Manganese Tricarbonyl CAS# 12108-13-3Manganese, tricarbonyl methylcyclopentadienyl is a dark orange liquid. Faintly pleasant, herb-like odor. Molecular weight= 218.10;Boiling point=232℃; Freezing/Melting point=18℃; Flash point=74℃; 96℃. Hazard Identification (based on NFPA-704 M Rating System): Health 3, Flammability 0, Reactivity 0.

Products Description of Thiotriazolin CAS#357172-63-5Colorless liquidFactory and Equipment ShowFast delivery timeInventory 2-3 working days New production 7-10 working days

Products Description of Ferrous sulfate heptahydrate CAS37782-63-0The chemical formula of ferrous sulfate is FeSO4. The most common one is ferrous sulfate FeSO4·7H2O containing seven crystal waters, commonly known as green vitriol. Light blue-green monoclinic crystal, density 1.898g/cm3, melts in crystal water at 64℃. Soluble in water, the aqueous solution is acidic. Gradually weathered in the air, and oxidized to yellow-brown basic iron salt.

Products Description of Poly(L-lysine hydrobromide) CAS#25988-63-0Antioxidants, Chelating Agents, PreservativesPoly(L-lysine hydrobromide) Chemical Propertiesstorage temp. 2-8°Cform lyophilized powderStability:Stable. Incompatible with strong acids, strong bases. Safety InformationWGK Germany 3F 3-10Product Application of Poly(L-lysine hydrobromide) CAS#25988-63-0Only a trace amount of polylysine needs to be added to food to be effective, and it will not affect the taste of the food. It can be used as a natural preservative for food.

Products Description of Boron Trifluoride Diethyl Etherate CAS#109-63-7Boron trifluoride is an important Lewis acid catalyst in organic synthesis and plays an important role in organic reactions (such as polymerization, hydrocarbonization, alkylation, isomerization, etc.). It is inconvenient to use trifluoride when it is in gaseous state. In order to adapt to the activity requirements of different reactions, according to the characteristics of trifluoride, it is often combined with polar oxygen- or nitrogen-containing compounds to convert it into a complex with strong stability.