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Fluorescent Brightener 121

Fluorescent Brightener 121 Structure
Fluorescent Brightener 121 structure
CAS No.
2744-49-2
Chemical Name:
Fluorescent Brightener 121
Synonyms
c.i. 50510;BlankophorMan01;Fluorescent Brightener 121;Fluorescent Brightener 121 ISO 9001：2015 REACH;3-(4-chlorophenyl)-1-(4-sulfamoylphenyl)-2-pyrazoline;4-[3-(4-Chlorphenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzolsulfonamid;Benzenesulfonamide, 4-3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl-;4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulphonamide;4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazole-1-yl]benzenesulfonamide;4-[[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol]-1-yl]benzenesulfonamide
CBNumber:
CB1855317
Molecular Formula:
C15H14ClN3O2S
Molecular Weight:
335.81
MDL Number:
MFCD00181673
MOL File:
2744-49-2.mol
MSDS File:
SDS
Last updated:2026-05-12 09:16:02
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Fluorescent Brightener 121 Properties

Melting point 218-219°C
Boiling point 535.2±60.0 °C(Predicted)
Density 1.45
pka 10.39±0.10(Predicted)
LogP 2.56 at 30℃
FDA UNII 5J494GKT53
EPA Substance Registry System Benzenesulfonamide, 4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]- (2744-49-2)

SAFETY

Risk and Safety Statements

TSCA  TSCA listed
REACH Registrations Active

Fluorescent Brightener 121 price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth FC180654 Fluorescent brightener 121 2744-49-2 5mg $900 2026-06-04 Buy
Biosynth FC180654 Fluorescent brightener 121 2744-49-2 2mg $900 2026-06-04 Buy
Biosynth FC180654 Fluorescent brightener 121 2744-49-2 25mg $900 2026-06-04 Buy
Biosynth FC180654 Fluorescent brightener 121 2744-49-2 1mg $900 2026-06-04 Buy
Biosynth FC180654 Fluorescent brightener 121 2744-49-2 10mg $900 2026-06-04 Buy
Product number Packaging Price Buy
FC180654 5mg $900 Buy
FC180654 2mg $900 Buy
FC180654 25mg $900 Buy
FC180654 1mg $900 Buy
FC180654 10mg $900 Buy

Fluorescent Brightener 121 Chemical Properties, Uses, Production

Flammability and Explosibility

Non flammable

Fluorescent Brightener 121 Preparation Products And Raw materials

Raw materials

Preparation Products

Fluorescent Brightener 121 Suppliers

Global Suppliers ( 15)
Supplier Tel Email Country ProdList Advantage
Dideu Industries Group Limited +8617392712697 1022@dideu.com China 29089 58
Chemwill Asia Co.,Ltd. 86-21-51086038 chemwill_asia@126.com CHINA 23861 58
Chongqing Chemdad Co., Ltd +86-023-6139-8061 +86-86-13650506873 sales@chemdad.com China 39866 58
CONIER CHEM AND PHARMA LIMITED sales@conier.com China 49906 58
DAYANG CHEM (HANGZHOU) CO.,LTD +86-88938639 +86-17705817739 info@dycnchem.com China 53589 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
HANGZHOU LEAP CHEM CO., LTD. +86-571-87711850 +86-15355479329 market18@leapchem.com China 43303 58
GIHI CHEMICALS CO.,LIMITED +86-571-86217390; +8618058761490 info@gihichemicals.com China 49858 58
HANGZHOU LEAP CHEM CO., LTD. +86-571-87711850 +8619957148339 market18@leapchem.com China 24569 58
Supplier Advantage
Dideu Industries Group Limited 58
Chemwill Asia Co.,Ltd. 58
Chongqing Chemdad Co., Ltd 58
CONIER CHEM AND PHARMA LIMITED 58
DAYANG CHEM (HANGZHOU) CO.,LTD 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. 58
HANGZHOU LEAP CHEM CO., LTD. 58
GIHI CHEMICALS CO.,LIMITED 58
HANGZHOU LEAP CHEM CO., LTD. 58

View Latest Price from Fluorescent Brightener 121 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Fluorescent Brightener 121 pictures 2026-08-20 Fluorescent Brightener 121
2744-49-2
 $1.10 1g 99.00% 100 Tons Min Dideu Industries Group Limited

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3-(4-chlorophenyl)-1-(4-sulfamoylphenyl)-2-pyrazoline c.i. 50510 Fluorescent Brightener 121 4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulphonamide BlankophorMan01 Benzenesulfonamide, 4-3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl- 4-[3-(4-Chlorphenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzolsulfonamid 4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]-Benzenesulfonamide 4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol- 1-yl]benzenesulfonamide 4-[3-(4-chlorophenyl)-4,5-dihydro-1h-pyrazol-1-yl]-benzenesulfonamid 4-[[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol]-1-yl]benzenesulfonamide 4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazole-1-yl]benzenesulfonamide Fluorescent Brightener 121 ISO 9001：2015 REACH 2744-49-2