Sắc tố và thuốc nhuộm

White Crystal Powder Sodium Dimethyldithiocarbamate CAS 128-04-1 Disinfectants Overview of White Crystal Powder Sodium Dimethyldithiocarbamate CAS 128-04-1 Disinfectants The pure product of sodium fumarate is a scaly white crystal, which is very soluble in water. The crystals obtained by the crystallization method contain 2.5 molecules of crystal water. When heated to 115°C, 2 molecules of crystal water are lost, and at 130°C, the crystal water is completely lost. The

Black Powder Eriochrome Black T Indicator Eriochrome Black T indicator (CAS 1787-61-7), also known as Mordant Black 11 or Elektrochrome Black T indicator, is a versatile metal ion indicator used in complexometric titrations. The chemical name is 1-(1-hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonate sodium salt. Product Specifications Product NameEriochrome Black T CAS Number1787-61-7 Molecular FormulaC20H12N3NaO7S Molecular Weight461.38 EINECS217-250-3 AppearanceBlack

Orange Powder Xylenol Orange Sodium Salt CAS 63721-83-5 Acid-Base Indicators Overview Xylenol orange is a triphenylmethane colorimetric agent with a molecular formula of C₃₁H₃₂N₂O₁₃S and a molecular weight of 672.66. It is a lustrous, reddish-brown crystalline powder. It is highly deliquescent. Its sodium salt is readily soluble in water but insoluble in alcohol and ethe. Due to its o-cresolphthalein structure, the pH of the solution significantly affects its color developmen

Dark Green Powder Wright'S Stain CAS 68988-92-1 Biological Stains Overview Wright's stain is ready for direct use, requiring no preparation. A trace amount of neutral glycerol is added to the stain to prevent methanol volatilization or oxidation, while also allowing for clearer staining of blood cells. It is commonly used for blood and cell smears, bone marrow smears, and bacterial staining. Cytoplasm appears red, nuclei and bacteria appear blue, and eosinophilic granules

Dark Green Powder Neutral Red CAS 553-24-2 Titration Indicator Overview Neutral red, dark green powder obtained in 50% ethanol. Soluble in water or alcohol, it turns red. Its solubility in water, anhydrous ethanol, and ethylene glycol-ethe is 4%, 1.8%, and 3.75%, respectively. It is insoluble in xylene. Product Parameters Item Value Product Name Neutral Red CAS 553-24-2 MF C15H17ClN4 MW 288.78 EINECS 209-035-8 Appearance dark green powder Product Image Application Neutral red

Dye Intermediate Solvent Red 52 CAS 81-39-0 C24H18N2O2 Plastic Coloring Introduction: Purple red crystal, melting point 269-270 ℃. Dissolve in water. It appears dark red in concentrated sulfuric acid and produces a red precipitate after dilution. Uses: Used for coloring various resin plastics, such as polyacrylic acid resin, polystyrene, ABS resin, organic glass, polyester resin, polycarbonate, etc., resulting in blue light red color. Product Name Solvent Red 52 CAS 81-39-0

White Crystal Powder Pyrogallol CAS 87-66-1 Developer And Inhibitor Overview of White Crystal Powder Pyrogallol CAS 87-66-1 Developer And Inhibitor White odorless crystals. Bitter taste. Turns gray when exposed to air and light. Starts to sublime when heated slowly. Melting point 133-134℃, boiling point 309℃, relative density 1.453, refractive index 1.561. Soluble in water, ethanol, ethe, slightly soluble in benzene, chloroform, carbon disulfide. When exposed to air, the

Dye intermediate Basic Violet 1 CAS8004-87-3 C24H28ClN3 Biological Stains Introduction: Methyl violet, also known as gentian violet, is an alkaline dye that is a mixture of tetramethyl chloride pentamethyl chloride and hexamethyl chloride para rosaniline. It is a dark green purple powder or fragments of green violet with metallic luster. Uses: Used as a dye in industry, it can dye wool, silk, and cotton products treated with tannins purple; It is also used for dyeing paper,

Biological Stain Solvent Red 24 CAS 85-83-6 Coloring of Oils Water Soap Candles Plastic Products Introduction: Dark red powder. Melting point 184-185 ℃. Insoluble Uses: 1. Biological dyes 2. Mainly used for coloring oils, water, soap, candles, rubber toys, and plastic products. Product Name Solvent Red 24 CAS 85-83-6 MF C24H20N4O MW 380.44 EINECS 201-635-8 Melting point 199 °C (dec.)(lit.)