Basic Dyestuff


Basic Yellow 1
Colorants For Electroplating, Acid Copper, etc.

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Product Name: BASIC YELLOW 1 (Thioflavine T, Setoflavine T)
Code: 201001DA
Color index: 49005
CAS No.: 2390-54-7
EINECS:
Molecular Formula: C17H19ClN2S
Molecular Weight: 318.86
Molecular structure:

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Physical and Chemical properties:

TEST ITEMS SPECIFICATION
APPEARANCE YELLOW POWDER
SHADE BRIGHT YELLOW
ABSORPTION WAVELENGTH 412nm
pH (at 20°C) 1.2-2.0
DENSITY 1.06 g/cm3
PERSPERATION FASTNESS (FADING) 2-3
LIGHT FASTNESS 3
IRONING FASTNESS (FADING) 4
SOAPING (FADING) 1
SOLUBILITY IN 2%SULFURIC ACID SOLUTION 10ppm
WATER INSOLUBLE 0.5% max
MOISTURE 3.0% max
STRENGTH 100-105 %
ABSORPTION MAXIMUM (H2O) λ max 410-414 nm
ABSORBANCE(E1%1cm) min. 750(H2O, 410.0 to 414.0 nm

Packing: 25kg bags with pallets/25kg drums/boxes.