
Optical brighteners for textile
Fibre-specific grades. Ionicity has to match the fibre before anything else in the recipe matters.
15 grades in this category

Optical brightener BAC-L
A cationic benzimidazole liquid made specifically for acrylic fibre, where anionic brighteners have no affinity at all.

Optical brightener NFW
A brightener built for protein fibre.

Optical brightener APC
The liquid version of C.I.

Optical brightener VBL
C.I.

Optical brightener 4BK
A stilbene derivative for cotton and cellulose whose shade can be shifted toward red, blue or violet on request - useful when a white has to match an existing…

Optical brightener BA-L
The liquid C.I.

Optical brightener BBU
C.I.

Optical brightener BA
C.I.

Optical brightener 199:1
The liquid, water-dispersible form of C.I.

Optical brightener PF
C.I.

Optical brightener DT
A ready-milled PF slurry for polyester, dilutable with any multiple of water and stable enough to take a 160 C bake.

Optical brightener 199
The same dispersion chemistry as 199:1 but tuned to a slightly reddish neutral white, and sold against the trade names Blankophor ER, Optical brightener CPS and…

Optical brightener ER-II
The 199:1 isomer of the ER family, carried for customers whose specification names C.I.

Optical brightener ER-I
C.I.

Optical brightener SWN
The coumarin grade - 7-diethylamino-4-methylcoumarin, C.I.
Grade comparison
| Grade | C.I. number | CAS number | Appearance |
|---|---|---|---|
| Optical brightener BAC-L | — | 95078-19-6 | light brown liquid |
| Optical brightener NFW | — | 27344-41-8 | yellow-green powder |
| Optical brightener APC | 220 | 16740-24-9 | Amber Transparent Liquid |
| Optical brightener VBL | 85 | 12224-06-5 | slight yellow powder |
| Optical brightener 4BK | — | — | Light yellow powder |
| Optical brightener BA-L | 113 | 112768-92-2 | Amber Transparent Liquid |
| Optical brightener BBU | 220 | 16740-24-9 | Light yellow uniform powder |
| Optical brightener BA | 113 | 112768-92-2 | Light yellow uniform powder |
| Optical brightener 199:1 | 199:1 | 13001-38-2 | Light Yellow dispersion / Liquid/ Emulsion |
| Optical brightener PF | 135 | 12224-12-3 | Light yellow crystal powder |
| Optical brightener DT | — | — | Light yellow slurry |
| Optical brightener 199 | 199 | 13001-39-3 | Light Yellow dispersion / Liquid/ Emulsion |
| Optical brightener ER-II | 199:1 | 13001-38-2 | — |
| Optical brightener ER-I | 199 | 13001-39-3 | Yellowish green powder |
| Optical brightener SWN | 140 | 91-44-1 | White to light brwon Crystalline Powder |
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Optical brightener for acrylic fiber
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