Bestes in China hergestelltes Polysorbat 20 Mit günstigem Preis

1) Produktname: tween 20
3) Spezifikation: ≥99%
4) Testmethode: HPLC
5) Aussehen: Light Yellow oil Liquid
6) Charakter: In Wasser löslich, löslich in Ethanol, vegetable oil, toluene, Ethylacetat, Methanol, insoluble in mineral oil. Low temperature gelatinize, after heat recovery. Have a special foul-smelling and slightly bitter taste. Dispersion of phthalocyanine green have help;
7) identification method:
(1) dieses Produkt (20) 1-5 ml of solution, add sodium hydroxide solution 5 ml, boiling for a few minutes, put the cold, with thin Hydrochloric acid acidification, milky haze.
(2) (1 – > 20) pick up the product solution, try adding bromine drops, bromine test solution that fade.
(3) take this product 6 ml, add water, 4 ml and mixed with glue.
(4) take this product (1 – > 20) 10 ml of solution, and cobalt ammonium thiocyanate solution (with cobalt nitrate in ammonium thiocyanate 17.4 G 2.8 G, add water to dissolve into 100 ml) 5 ml, blender, hinzufügen 5 ml, chloroform vibration wave mixing, quiet place, blue chloroform layer.