Formula: C24H16N2
Molecular Weight: 332
C.I. Number: 199
Appearance: slight yellow powder
Melting Point: 230~232°C
Purity: ≥98.0%
Application: mainly be used as whitening agent for polyester fiber, as well the raw
           material of making paste form brightening agent in textile dyeing.
Property: bluish color shade with strong fluorescence, high whitening performance
         and excellent fastness to sublimation.
Maximum UV Absorption Spectrum: 369nm
Packing: 20kg per fiber drum

Formula: C28H18N2O2
Molecular Weight: 414.4
C.I. Number: 393
Appearance: greenish yellow powder
Melting Point: 359°C
Purity: ≥98.0%
Application: mainly be used in whitening of polyester and plastic, as well in whitening of Nylon during polymerization.
Packing: 25kg per fiber drum

Appearance: yellowish green crystals powder
Purity: 99.0% min

Solubility: insoluble in water, but soluble in organic solvents

Usage: A good whitening agent for polyester fiber, and also have a good effect for polyester with blend fiber etc.

Molecular Formula:C40H40N12Na4O16S4
Molecular Weight: 1165.04
CAS Registry Number:16470-24-9/49549-42-5

Properties and Applications:blue light. And water softening with arbitrary proportion miscibility, the acid-base stability. Used in paper, can be used as adhesive coating components, colored coating components or join in pulp beater. Can be used for cellulose fiber whitening.

Molecular Formula:C40H38N12Na6O18S6
Molecular Weight: 1305.13
CAS Registry Number:83512-97-4
Manufacturing Methods :
Properties and Applications:blue light purple. Soluble in water, insoluble in most organic solvents. Used for detergent.

C.I. NO.: Fluorescent brightener 184
CAS NO.:7128-64-5
EC NO.:230-426-4
Molecular formula: C26H26N2O2S
Molecular weight: 430
Properties: The product is a bright yellow-green crystal powder. Its melting point is 196-203°C,Decomposition temperature is larger than 220°C.It is insoluble in water,dissolved in paraffin fat ,miner oil, wax and common organic solvents.The hue of the fluorescent light is blue light.The maximum wavelength of   absorptive light is 375 nm(ethyl alcohol).
Technical conditions:
Appearance: bright yellow-green crystal power.
Chromatic light: Bright-colored blue fluorescent light (similar to the standard product)
Melting point: 196-203°C
Content of solid: ≥99.5%
Fineness : through 100 meshes
Use: It is mainly used in brightening of thermoplastic plastics,PVC, PE, PP, PS, ABS, SAN, CA, PA, PMMA, acrylic resin ,polyester fibre, paint, coating,and printing ink .
Package:
It is packed in double corrugated carton lined with plastic bag.The net weight of each box is10 kg .Or packaged according to the requirement of the user.

CAS Registry Number:12768-92-2/12676-25-4
Manufacturing Methods :
Properties and Applications:brilliant blue purple. Soluble in water. In neutral or alkaline dyeing bath dyed cotton with the staining, especially suitable for peroxide bleaching solution in use; Also used to discharge. Can be used for cotton, wool, silk, nylon as well.

Chemical Properties
Pale Yellow Solid
 

Usage
Fluorescent (optical) brighteners are known for their characteristics of protecting baculoviruses against deactivation by UV light and enhancing the activity of these agents as microbial insecticides on hosts and semipermissive hosts. Fluorescent brighteners improve the bioinsecticidal activity of Anticarsia gemmatalis nucleopolyhedrovirus.