Formula: C40H40N12O16S4Na4

Molecular Weight:1165.12(As International relative Atom Mass 1997)

Max uv absorption spectrum:350nm

Character:show nionic character and optical blue color

excutive standard:HG/T3727-2003

Specification:

Appearance                                         light yellow uniform powder

Fluorescent strength                                 100+/-3

(equivalent to the standard sample)

Whiteness                                           ≧-3

(the deviation with the standard sample)                                       similar to slightly different

Moisture content                                     ≤5.0%

Content of water-insoluble impurities                    ≤0.5%

Fineness

(residual content passed through 180μm-pore sieve)      ≤10%