Fluorescent brightener BBU

C.I. NO. 220

CAS: 16470-24-9

Molecular formula: C40H40O16N12S4Na4 

Quality index:

Appearance: light yellow uniform particles

Fluorescence intensity (equivalent to that of the standard): 100

Whiteness (difference from the whiteness of standard sample: whiteness% of sample or whiteness% of wcte standard sample or wcte): ≥ - 3

Moisture,%: ≤ 5.0

Fineness (amount of residue passing 250um sieve,)%: ≤ 10

Water insoluble content%: 0.5

Performance characteristics:

Fluorescent brightener BBU belongs to stilbene tetrasulfonic acid derivative. Because the product is granular, its water solubility, sun resistance, acid and alkali fastness are one grade higher than that of fluorescent brightener VBL, and the whiteness value of the same dosage is very high. It is soluble in water and shows blue purple light. The product is very stable in storage and transportation, and is especially suitable for the production of high-grade paper, cotton fabric and other export products.