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Optical brighteners

Cellufluor

Also known as Kayaphor FB, Phorwite AR, Tinopal UNPA

CAS 4193-55-9Formula C40H42N12Na2O10S2Molar mass 960.96 g/molEC 224-073-5
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Cellufluor chemical structure, C40H42N12Na2O10S2, CAS 4193-55-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4193-55-9
Formula
C40H42N12Na2O10S2
Molar mass
960.96 g/mol
Physical form
Powder
HS code
320420
Category
Optical brighteners
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Cellufluor?

Plain description, key identifiers and synonyms

Calcofluor White is an organic sodium salt. It contains a 4,4'-bis({4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl}amino)stilbene-2,2'-disulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
disodium, 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(E)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfonatophenyl]ethenyl]benzenesulfonate
CAS number
4193-55-9Other or deprecated CAS: 12224-07-6, 59453-69-9
EC numbers
224-073-5, 602-365-7
Molecular formula
C40H42N12Na2O10S2
UNII
11V30J47QK
MDL number
MFCD00010566
InChIKey
YJHDFAAFYNRKQE-YHPRVSEPSA-L
InChI
InChI=1S/C40H44N12O10S2.2Na/c53-21-17-51(18-22-54)39-47-35(41-29-7-3-1-4-8-29)45-37(49-39)43-31-15-13-27(33(25-31)63(57,58)59)11-12-28-14-16-32(26-34(28)64(60,61)62)44-38-46-36(42-30-9-5-2-6-10-30)48-40(50-38)52(19-23-55)20-24-56;;/h1-16,25-26,53-56H,17-24H2,(H,57,58,59)(H,60,61,62)(H2,41,43,45,47,49)(H2,42,44,46,48,50);;/q;2*+1/p-2/b12-11+;;
Canonical SMILES
O=S(=O)([O-])c1cc(Nc2nc(Nc3ccccc3)nc(N(CCO)CCO)n2)ccc1C=Cc1ccc(Nc2nc(Nc3ccccc3)nc(N(CCO)CCO)n2)cc1S(=O)(=O)[O-].[Na+].[Na+]
Isomeric SMILES
C1=CC=C(C=C1)NC2=NC(=NC(=N2)N(CCO)CCO)NC3=CC(=C(C=C3)/C=C/C4=C(C=C(C=C4)NC5=NC(=NC(=N5)NC6=CC=CC=C6)N(CCO)CCO)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Synonyms

  • Kayaphor FB
  • Phorwite AR
  • Tinopal UNPA
  • Paper White BP
  • Tinopal 5BMS
  • Uvitex 4BM
  • Blancophor MS 31
  • Blancophor MS 72
  • Tinophen MS 31
  • Tinophen MS 72
  • Blancophor RG 96FS
  • Hiltamine Arctic White CWD
  • 4,4'-Bis((2-anilino-4-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-6-yl)amino)stilbene-2,2'-disulfonic acid, disodium salt
  • Fluorescent Brightener 28
  • Calcofluor White ST
  • Calcofluor White LRP
  • Calcofluor White M 2R
  • DASC 2
  • C.I. 40622
  • C.I. Fluorescent Brightening Agent 28, disodium salt
  • C.I. Fluorescent Brightener 28
  • Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((4-(bis(2-hydroxyethyl)amino)-6-(phenylamino)-1,3,5-triazin-2-yl)amino)-, disodium salt
  • Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((4-(bis(2-hydroxyethyl)amino)-6-(phenylamino)-1,3,5-triazin-2-yl)amino)-, sodium salt (1:2)
  • C.I. Fluorescent Brightener 28, disodium salt
  • Disodium 4,4'-bis(6-anilino-(4-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amino)stilbene-2,2'-disulphonate
Show all 38 synonyms
  • 2,2'-Stilbenedisulfonic acid, 4,4'-bis((4-anilino-6-(bis(2-hydroxyethyl)amino)-S-triazin-2-yl)amino)-, disodium salt
  • 2,2'-Stilbenedisulfonic acid, 4,4'-bis[[4-anilino-6-[bis(2-hydroxyethyl)amino]-s-triazin-2-yl]amino]-, disodium salt
  • Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]-, sodium salt (1:2)
  • Fluostaini
  • Ci fluorescent brightener 28
  • 2,2'-(1,2-Ethenediyl)bis(5-(4-(bis(2-hydroxyethyl)amino)-6-(phenylamino)-1,3,5-triazin-2-yl)amino)benzenesulfonic acid, disodium salt
  • 4,4'-Bis((4-anilino-6-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amino)-stilbene-2,2'-disulfonic acid, disodium salt
  • 4,4'-Bis((4-anilino-6-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amino)stilbene-2,2'-disulfonic acid, disodium salt
  • 4,4'-Bis(4-anilino-6-diethanolamine-alpha-triazin-2-ylamino)-2,2'-stilbene disulfonic acid, disodium salt
  • Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((4-(bis(hydroxyethyl)amino)-6-(phenylamino)-1,3,5-triazin-2-yl)amino)-, disodium salt
  • CI 40622
  • Ci fluorescent brightening agent 28, disodium salt
  • 2,2'-Stilbenedisulfonic acid, 4,4'-bis((4-anilino-6-bis(2-hydroxyethyl)amino-s-triazin-2-yl)amino)-, disodium salt

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Powderexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
960.96 g/molcalc.
Exact mass
960.2384 Dacalc.
LogP (octanol/water)
-3.4calc.
Topological polar surface area
327.3 Ųcalc.
Hydrogen bond donors
8calc.
Hydrogen bond acceptors
22calc.
Rotatable bonds
22calc.
Heavy atoms
66calc.
Rings
6calc.
Aromatic rings
6calc.
Fraction sp3 carbons
0.2calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
Lipinski rule of five
Fails (3 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C(=Cc1ccc(Nc2ncnc(Nc3ccccc3)n2)cc1)c1ccc(Nc2ncnc(Nc3ccccc3)n2)cc1

C(=Cc1ccc(Nc2ncnc(Nc3ccccc3)n2)cc1)c1ccc(Nc2ncnc(Nc3ccccc3)n2)cc1

6 rings, 42 atoms.

135 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Cellufluor suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 7 suppliers
7 of 7 offers

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Where suppliers are based

7 suppliers in 3 countries

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Cellufluor price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Brightener, Dye.

Consumer uses: Brightener, Dye.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cellufluor is traded under.

HS 3204.20Indicative HS code

Synthetic organic products of a kind used as fluorescent brightening agents

World exports in 2024
$485M
−7.4% vs 2023, imports $474M
2019 to 2024
Top exporters
  1. China31.6%
  2. Germany10.8%
  3. Switzerland * partner reported10.0%
Top importers
  1. United States9.6%
  2. Germany9.1%
  3. Indonesia7.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Cellufluor is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Cellufluor, based on the data on this page

What is Cellufluor?

Calcofluor White is an organic sodium salt. It contains a 4,4'-bis({4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl}amino)stilbene-2,2'-disulfonate.

What is the CAS number of Cellufluor?

The CAS registry number of Cellufluor is 4193-55-9. Other or deprecated CAS numbers: 12224-07-6, 59453-69-9.

What is the molecular formula and weight of Cellufluor?

The molecular formula of Cellufluor is C40H42N12Na2O10S2 and its molar mass is 960.96 g/mol.

What is Cellufluor used for?

Industrial uses: Brightener, Dye. Consumer uses: Brightener, Dye.

Is Cellufluor hazardous?

No GHS hazard classification for Cellufluor is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Cellufluor?

Cellufluor is usually classified under HS code 320420 (Synthetic organic products of a kind used as fluorescent brightening agents). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cellufluor?

CompoundList lists 7 suppliers of Cellufluor in China, India and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cellufluor in India?

2 suppliers in India list Cellufluor on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Cellufluor?

Suppliers quote Cellufluor on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Cellufluor

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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