In 1929, P. Krais discovered that 6,7-dihydroxycoumarin can fluoresce under ultraviolet light, and the fabric has a whitening effect after being immersed in its aqueous solution. The first commercially available fluorescent whitening agent was a derivative of 4,4'-bisazinyl stilbene-2,2' disulfonic acid produced by the Bayer Company of the Federal Republic of Germany in 1940. Since then, many optical brighteners have been developed and thus form a series in the dye. Fluorescent whitening agents are commonly known as "white dyes", also known as optical brighteners, referred to as brighteners. An organic compound that emits fluorescence under the illumination of ultraviolet light. The whitening effect is to use the optical complementary color principle to make the yellowing material not only reflect visible light but also absorb ultraviolet light other than visible light and convert it into visible light with purple blue or cyan. . An organic substance that can increase the whiteness of fiber fabrics and paper. The brightener can absorb ultraviolet light of 330-360 nm wavelength, and the blue-violet light of the reflected light wavelength is 400-440 nm, which is complementary to the yellow light originally reflected by the fabric which is still yellow after bleaching treatment. Add white to make the fabric white. After the whitening treatment, some of the ultraviolet light is also converted into visible light, and the total amount of reflection is increased compared with the untreated one. Therefore, the brightness of the treated fabric is also increased, so that the white fabric is more white, and the colored fabric increases the vividness. Fluorescent whitening differs from chemical bleaching in that it does not impair the color and strength of the fabric. However, if the fabric or paper of dark background is directly treated with a whitening agent without bleaching, a good effect cannot be obtained. The organic compound used as the fluorescent whitening agent has at least four conjugated double bonds in the molecular structure, such as —C=C—C=C—C=C—C=C— or —N=C—C=C— C=N —C=C—. There are four common types of chromophore structures: 1 stilbene type, such as whitening agent VBL. It is mainly used as a whitening component in cotton fiber whitening and advanced synthetic detergents. 2 Coumarin type, such as brightener WS. It has strong blue fluorescence and is a whitening agent for polyamide, wool and silk. 3 azole type. Mainly used for whitening of wool, polyamide and acrylic. 4 naphthalimide type, such as APL. Can be used for whitening of polyamide, polyester fiber and polyvinyl chloride plastics. Brighteners are mainly used in the textile printing and dyeing industry to improve the whiteness and gloss of various natural and synthetic fabrics. In recent years, applications in the paper, plastics, leather, soap, synthetic detergents and other commodity industries have also grown rapidly.


Amino compound >
Oxy-containing amino compound Cycloalkylamines, aromatic monoamines, aromatic polyamines and derivatives and salts thereof Acyclic monoamines, polyamines and their derivatives and salts Amide compound Sulfonic acid amino compound
Alcohols, phenols, phenolic compounds and derivatives >
2-cycloalcohol Halogenated, sulfonated, nitrated or nitrosated derivatives of alcohols Extremely halogenated, sulfonated, nitrated or nitrosated derivatives of phenols Phenol and its halogenated, sulfonated, nitrated or nitrosated derivatives Acyclic alcohol
Nitrogen-containing compound
Nitrile compound
Organic derivative of hydrazine or hydrazine
Terpenoid
Ether compounds and their derivatives >
Ether, ether alcohol Halogenation, sulfonation, nitration or nitrosation of ethers, ether alcohols, ether phenols
Aldehyde
Carboxylic compounds and derivatives >
Cyclic carboxylic acid Halogenation, sulfonation, nitration or nitrosation of carboxylic acids Halogenation, sulfonation, nitration or nitration of carboxylic anhydrides Carboxylic acid halide Carboxylic esters and their derivatives Salt of carboxylic acid ester and its derivatives Acyclic carboxylic acid
Hydrocarbon compounds and their derivatives >
Aromatic hydrocarbon Cyclic hydrocarbon Hydrocarbon sulfonate Hydrocarbon halide Hydrocarbon nitrite Acyclic hydrocarbon
Ketone compound
Alkyl ureas and their derivatives and salts
Inorganic acid ester
Heterocyclic compound
Diazo, azo or azo compound
Organosilicon compound
Organometallic compound >
Organic palladium Organic germanium, cobalt, strontium, barium, gallium, germanium, germanium, germanium, germanium, etc. Organic calcium Zirconium Organic potassium Organic Organic lithium Organic Organic aluminum Organotin Organic manganese Organic sodium Organic nickel Organic titanium Organic iron Organic copper Organotin Organic zinc Organic Organic Organic germanium, mercury, silver, platinum, etc. Organic germanium, antimony, bismuth, tungsten, antimony, bismuth, lead, vanadium, molybdenum, chromium, antimony, etc.
Organic sulfur compound
Organic phosphine compound
Organometallic salt
Organic fluorine compound >
Fluorobenzoic acid series Fluorobenzonitrile series Fluorobenzaldehyde series Fluorobenzyl alcohol series Fluoroanisole series Fluoroaniline series Fluorophenylacetic acid series Fluorophenol series Fluorobenzoic acid series Fluoronitrobenzene series Fluoropyridine series Potassium fluoroborate series Fluorobenzyl alcohol series Fluorotoluene series Fluorine red series Fluoroethane series Fluoropropane series
Respiratory medication >
Asthma Other respiratory medications Peony Antitussive
Hormone and endocrine-regulating drugs >
Birth control pills Pituitary hormone Estrogen and progestogen drugs Adrenocorticotropic drugs Gonadotropin Thyroid hormone and antithyroid drugs other Prostaglandins Adrenal corticosteroids Androgen and anabolic hormone drugs Pancreatic hormones and other blood sugar regulating drugs Treatment of male erectile dysfunction drugs
Antipyretic analgesics >
Non-steroidal anti-inflammatory drugs Antipyretic and analgesic Anti-migraine drug Anti-gout medicine Analgesic
Antiallergic >
Allergic reaction medium blocker Antihistamine
Antiparasitic drug >
Anti-amebiasis and anti-trichomoniasis drugs Antimalarial Resistance to filariasis and anti-leishmaniasis Anti-fungal medicine Anthelmintic Antiprotozoal Anthelmintic
Antibiotics >
Beta-lactamase inhibitor Aminoglycoside Macrolide drug Peptide Polyene Rifamycin Lincosamide Other antibiotics Penicillin Tetracycline Cephalosporin Amide alcohol Agricultural antibiotics
Antineoplastic agents >
Hormone antineoplastic agents Antimetabolite antineoplastic Antibiotic antineoplastic agents Anti-tumor adjuvant Other antineoplastic agents Natural source antineoplastic agents Alkylating agent Tinic antineoplastic agents Idiopathic pulmonary fibrosis (IPF) treatment
Anesthetic Agents >
Skeletal muscle relaxant Local anesthetics General anesthetics
Urinary system medication >
Diuretic Diabetes insipidus medication Other urinary system medication Dehydrated medicine
Other chemicals >
other Health and epidemic prevention drugs
Synthetic anti-infective drugs >
Sulfonamides and synergists Antiviral drugs Anti-tuberculosis leprosy Antihelium drug Antifungal drugs Quinolone Natural source anti-infectives Disinfectant antiseptic Nitrofuran
Nervous system medication >
2 sedative and hypnotics Antiepileptic and anticonvulsant Anxiolytic Antipsychotic Antidepressant, manic Anti-shock palsy Brain metabolism regulating drug Cholinergic Other nervous system medication Central stimulant Parkinson's syndrome
Water, electrolyte and acid-base balance regulator >
Electrolyte balance regulator Glucose drug Acid-base balance regulator
Vitamins and minerals >
Trace elements and mineral drugs Vitamin AD drugs Vitamin B drugs Vitamin C drugs Nutritional health medicine
Digestive system medication >
Liver disease medication Acid and gastric mucosal protective drugs Biliary medicine Other digestive system medication Appetite suppressant and other diet pills Gastrointestinal drug Gastrointestinal expectorant Laxative antidiarrheal Inhibition of gastric acid secretion Antiemetic emetic Digestive drug
Blood system medication >
Leukocyte proliferative drug Platelet proliferative drug Anticoagulant and antiplatelet drugs Anti-anemia drug Blood volume expander Hemostatic drug
Circulatory system medication >
Regulating blood lipids Prevention and treatment of angina pectoris Calcium channel blocker Anti-congestive heart failure medicine Antihypertensive drug Antiarrhythmic drug Anti-shock vasoactive drug Other circulatory system medication Angiotensin converting enzyme and receptor inhibitor Peripheral vasodilator Beta-adrenergic receptor blocker Treatment of chronic cardiac insufficiency Anti-atherosclerosis
Diagnostic medication >
Organ function test agent Image inspection medication
Special medicine >
Radioisotope Antidote Stomatology medication Dermatology medication Surgical medication Ophthalmic medication
Drugs that affect tissue metabolism
Feed drug additive
Anti-stress drug
Immune function drug >
Immunomodulatory drug Immunosuppressive drug
Veterinary drug raw materials
Inhibitor
Common amino acids and protein drugs
Nucleic acid drug
Enzymes and coenzymes
Inhibitor >
Immune inhibitor Protein tyrosine kinase Neuronal Signaling PI3K/Akt/mTOR inhibitor (PI3K/Akt/mTOR) Metabolism Cell Cycle Epigenetics Cytoskeletal Signaling Angiogenesis DNA damage Proteases Apoptosis Mitogen-activated protein kinase (MAPK) Endocrinology & Hormones G protein coupled receptor(GPCR & G Protein) Transmembrane Transporters Tyrosine protein kinase/signal transducer and transcriptional activator inhibitor (JAK/STAT) TGF-beta/Smad signaling pathway inhibitor (TGF-beta/Smad) Stem Cells & Wnt Signaling Paths (Stem Cells & Wnt) Nuclear transcription factor (NF-κB) Ubiquitin inhibitor Microbiology Autophagy lysosome (Autophagy)
Biological response modifier
Fatty drug
Amino acids and their derivatives >
Arginine derivatives Asparagine derivatives Aspartic acid derivative Cysteine derivative Glutamine derivative Glutamic acid derivative Glycine derivatives Histidine derivative Isoleucine derivative Leucine derivative Lysine derivative Methionine derivatives Phenylalanine derivatives Proline derivatives Serine derivative Threonine derivative Tryptophan derivatives Tyrosine derivatives Proline derivatives Alanine derivatives Methionine derivatives BOC-amino acid Cbz-amino acid FMOC-amino acid --amino acid Other protected amino acids Amino alcohol derivative Amino acid salt Ester amino acid Other amino acid derivatives Natural amino acids and their derivatives
Carbohydrate >
Monosaccharide Oligosaccharide Polysaccharide Double sugar
Biochemical reagent >
Biological dye Acid-base indicator Adjuvant
Nucleoside drugs >
Nucleoside intermediate Deoxynucleotides and their analogues Nucleotides and their analogues
Condensing agent
Peptide
Natural product
Plant extracts
Chinese herbal medicine ingredients
Microbiological reagent
Protein research
antibody >
Antibody Enzyme secondary antibody Apoptosis and autophagy Cell metabolism Chromatin / epigenetic / cell cycle Cytoskeleton/extracellular matrix MAPK and PI3K/Akt pathway Neuroscience Immunity and inflammation PKC, calcium ion and lipid signaling pathway Stem cells, development and differentiation Protein translation, folding and degradation Other categories of primary antibodies
  • CAS Number: 12768-89-7
  • MF: C21H16ClN2NaO3S
  • MW: 434.87111
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 12224-06-5
  • MF: C36H34N12Na2O8S2
  • MW: 872.84000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 12270-52-9
  • MF:
  • MW:
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 3426-43-5
  • MF: C34H28N10Na2O8S2
  • MW: 814.75800
  • Catalog:Fluorescent whitening agent
  • Density: 1.573g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 12224-41-8
  • MF: C18H10N2O2S
  • MW: 318.34900
  • Catalog:Fluorescent whitening agent
  • Density: 1.385g/cm3
  • Boiling Point: 466.4ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 235.9ºC
  • CAS Number: 12224-11-2
  • MF: C15H14ClN3O2S
  • MW: 335.80900
  • Catalog:Fluorescent whitening agent
  • Density: 1.45 g/cm3
  • Boiling Point: 535.2ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 277.5ºC
  • CAS Number: 25738-35-6
  • MF: C28H24N4O8S2
  • MW: 608.64200
  • Catalog:Fluorescent whitening agent
  • Density: 1.605
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 16090-02-1
  • MF: C40H38N12Na2O8S2
  • MW: 924.91500
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: >270ºC
  • Flash Point: N/A
  • CAS Number: 12224-37-2
  • MF:
  • MW:
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 41098-56-0
  • MF: C40H38N12Na6O18S6
  • MW: 1305.13000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 4193-55-9
  • MF: C40H42N12Na2O10S2
  • MW: 960.94500
  • Catalog:Fluorescent whitening agent
  • Density: 1.37 g/cm3 在 20 ℃
  • Boiling Point: N/A
  • Melting Point: 290ºC
  • Flash Point: N/A
  • CAS Number: 12224-12-3
  • MF: C18H14N2O2
  • MW: 290.316
  • Catalog:Fluorescent whitening agent
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 471.2±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 237.3±25.5 °C
  • CAS Number: 5242-49-9
  • MF: C29H20N2O2
  • MW: 428.481
  • Catalog:Fluorescent whitening agent
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 578.9±39.0 °C at 760 mmHg
  • Melting Point: 269-271ºC
  • Flash Point: 290.9±21.0 °C
  • CAS Number: 1041-00-5
  • MF: C18H14N2O2
  • MW: 290.31600
  • Catalog:Fluorescent whitening agent
  • Density: 1.287
  • Boiling Point: 471.197ºC at 760 mmHg
  • Melting Point: 180-181°C
  • Flash Point: 237.309ºC
  • CAS Number: 28950-61-0
  • MF: C40H36N12Na4O14S4
  • MW: 1129.00000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 95078-19-6
  • MF:
  • MW:
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 2856-63-5
  • MF: C8H6ClN
  • MW: 151.593
  • Catalog:Fluorescent whitening agent
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 254.0±15.0 °C at 760 mmHg
  • Melting Point: 21-24 °C
  • Flash Point: 107.7±15.4 °C
  • CAS Number: 7128-64-5
  • MF: C26H26N2O2S
  • MW: 430.562
  • Catalog:Fluorescent whitening agent
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 531.2±45.0 °C at 760 mmHg
  • Melting Point: 199-201 °C(lit.)
  • Flash Point: 275.1±28.7 °C
  • CAS Number: 2606-93-1
  • MF: C28H22N4Na2O8S2
  • MW: 652.60600
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 17919-34-5
  • MF: C22H32O6P2
  • MW: 454.433
  • Catalog:Fluorescent whitening agent
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 578.4±50.0 °C at 760 mmHg
  • Melting Point: 108-110°C
  • Flash Point: 316.4±50.4 °C
  • CAS Number: 612-13-5
  • MF: C8H6ClN
  • MW: 151.593
  • Catalog:Fluorescent whitening agent
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 252.0±15.0 °C at 760 mmHg
  • Melting Point: 56-61ºC
  • Flash Point: 106.2±15.4 °C
  • CAS Number: 4404-43-7
  • MF: C40H44N12O10S2
  • MW: 916.98200
  • Catalog:Fluorescent whitening agent
  • Density: 1.598 g/cm3
  • Boiling Point: N/A
  • Melting Point: 290ºC
  • Flash Point: N/A
  • CAS Number: 13001-38-2
  • MF: C24H16N2
  • MW: 332.39700
  • Catalog:Fluorescent whitening agent
  • Density: 1.18 g/cm3
  • Boiling Point: 573.5ºC at 760 mmHg
  • Melting Point: 181-186ºC
  • Flash Point: 274.1ºC
  • CAS Number: 16324-27-9
  • MF: C36H32N12Na4O14S4
  • MW: 1076.93000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 12768-91-1
  • MF: C40H40N12Na4O16S4
  • MW: 1165.04000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 4282-31-9
  • MF: C6H4O4S
  • MW: 172.159
  • Catalog:Fluorescent whitening agent
  • Density: 1.7±0.1 g/cm3
  • Boiling Point: 444.6±30.0 °C at 760 mmHg
  • Melting Point: >300 °C(lit.)
  • Flash Point: 222.7±24.6 °C
  • CAS Number: 27344-41-8
  • MF: C28H20Na2O6S2
  • MW: 562.564
  • Catalog:Fluorescent whitening agent
  • Density: 1.414
  • Boiling Point: N/A
  • Melting Point: >300°C (dec.)
  • Flash Point: N/A
  • CAS Number: 3602-55-9
  • MF: C10H12O2
  • MW: 164.20100
  • Catalog:Fluorescent whitening agent
  • Density: 1.092 g/cm3
  • Boiling Point: 227.8ºC at 760 mmHg
  • Melting Point: 54-58 °C(lit.)
  • Flash Point: 82.6ºC
  • CAS Number: 27344-06-5
  • MF: C42H44N14Na2O10S2
  • MW: 1015.00000
  • Catalog:Fluorescent whitening agent
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A
  • CAS Number: 12768-92-2
  • MF: C40H42N12Na2O10S2
  • MW: 960.94500
  • Catalog:Fluorescent whitening agent
  • Density: 1.276 g/cm3
  • Boiling Point: 227.6ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 109.9ºC