C6H14O6 182.17This product is D- mannitol . Calculated on dry goods , including C6H14O6 should be 98.0 ~ 102.0% . Properties:white crystalline powder ; odorless, sweet .This product is soluble in water, in ethanol or ether almost insoluble.Melting point melting point of this product ( Appendix Ⅵ C) to 166 ~ 170 ℃.Identification: ( a ) To about 0.5g, test tube , add acetyl chloride 3ml, slowly dropping pyridine 0.5ml, withDropwise with shaking , the reaction is completed once , pay attention to the solution was transferred to another tube , with ice -cooling, the precipitated crystals were filtered ,After washing with ether 10ml , removal test tube, add ether 15ml, set a warm water bath heated to dissolve , hot dip take the etherLiquid vaporized ether to give white crystals ( recrystallized again when necessary, 1 ) , after drying , determined by law ( Appendix Ⅵ C),A melting point of 120 ~ 125 ℃.( 2 ) to take this product a saturated aqueous solution 1ml, add ferric chloride solution and sodium hydroxide solution each 0.5ml, which generatesBrown precipitate , shaking does not disappear ; dropping an excess of sodium hydroxide solution , which dissolved into a brown solution .( 3 ) The infrared absorption spectrum should control of the spectrum ( spectral set 84 Figure ) consistent . Category:dehydration , diuretics .Storage:Sealed .
Product Name: Marigold ExtractSpecification: 5% 10% 20%Latin name: Tagetes marigold, chrysanthemum, also known as Honeycomb. Asteraceae, annual herb. 60 to 100 cm height, stem stout grooved, but
Specification: 5% 10% 20%Latin name: Tagetes marigold, chrysanthemum, also known as Honeycomb. Asteraceae, annual herb. 60 to 100 cm height, stem stout grooved, but the surface is smooth, Yezi Yu
Product Name: Marigold P. E Botanical Source: Marigold Part Used: Flower Appearance: Reddish orange yellow power Active ingredient: Lutein Specification: 5%-95% by HPLC C
Other name: Tannic acid, Tannin, Gallotannic acid. Molecular formula: C76H52O46 Molecular weight: 1701.18 Property: A yellowish to brownish powder, odour characteristic; Taste strongly
Other name: Tannic acid, Tannin, Gallotannic acid. Molecular formula: C76H52O46 Molecular weight: 1701.18 Property: A yellowish to brownish powder, odour characteristic; Taste strongly
MelanotanII Type: Pharmaceutical Intermediates Application: Fine Chemical Intermediate CAS NO:121062-08-6Packaging Detail:1g/glass bottlepurity:98%
English Name:Melatonin MF: C13H16N2O2 MW: 232.28 CAS NO.: 73-31-4 External appearance: white, white or pale yellow crystalline powder Use: melatonin can be widely used in he
Aide
Ajouter á l'élu
Les marchandises remises
