C.I. NO.:

220

CAS:

16470-24-9 

STRUCTURE:

MOLECULAR 

FORMULA:

C₄₀H₄₀O₁₆N₁₂S₄Na₄

SUBSTANCE 

NAME：

tetrasodium4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulphonatoanilino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate]

MOLECULAR 

WEIGHT:

1165.12 (As international relative Atom Mass 1997)

Max UV 

ABSORPTION 

WAVELENGHTH:

350 nm

CHARACTER:

Show nionic character and optical blue color

EXCUTIVE 

STANDARD:

HG/T3727-2003

SPECIFICATION:

Item

Indices

Appearance

Light yellow uniform powder

Fluorescent strenghth (equivalent to 

the standard sample)

100±3

Color Shade

Similar to the standard sample

Whiteness (the deviation with the 

standard sample)

≥ -3

Moisture content

≤ 5.0%

Content of water-insoluble impurities

≤ 0.5%

Fineness (residual content passed 

through 180μm-pore sieve)

≤ 10%

PROPERTY:

1.Good water solubility and can be dissolved in 3-5 times boiling water, and 

its solubility is 300 g per liter in boiling water and 150 g per liter in cooling water.

2. Good resistance to hard water, the ions of Ca2+ and Mg2+ have no influence on

its whitening effect.
3. Good resistance to peroxide bleach agent and containing reductive bleaching 

agent (sodium hydrosulfite).
4. General acid-resistance and the optimal applied pH value >7.

USEAGE:

1. Used for cotton fiber and glue fiber.
2. Used in the syrup of discharge pattern of printing color.
3. Used in paper pulp.
4. Used in the process of surface gluing.
5. Used in the process of coating.

PROCESS:(Such as

padding dyeing)

Bath temperature is about 60℃, holding time is about 10-20 minutes, bath 

ratio is 1:20, vapour steaming about 45 minutes, the dosage is 0.1-0.5%.

PACKAGE:

Packed in cardboard bucket after being packed in plastic bag first. Net weight 

per bucket is 25 kg or 50 kg.

TRANSPORTATION:

Should avoid sunlight and crash.

STORAGE:

Should be stored in cool, dry and ventilate place, and storage peroid should 

not exceed 2 years.