Optical Brightener ER-1
Hosea Chem® supplies Optical Brightener ER-1, CAS 13001-39-3, a stilbene-based fluorescent brightener used in plastics, PVC, coatings and polymer applications with bulk supply from China. Send Inquiry
Product Description
Optical Brightener ER-1, CAS 13001-39-3
Optical Brightener ER-1 is a stilbene-based fluorescent whitening agent with the chemical name 1,4-Bis(2-cyanostyryl)benzene. It is also known as Fluorescent Brightener 199, Fluorescent Brightener ER, Fluorescent Brightener ER-I, Optical Brightener ER and FBA 199. ECHA identifies CAS 13001-39-3 as 2,2'-(p-phenylenediethene-2,1-diyl)bisbenzonitrile, while commercial references use 1,4-Bis(2-cyanostyryl)benzene as a common product name.
Optical Brightener ER-1 has the molecular formula C24H16N2 and a molecular weight of 332.4 g/mol. Melting point of approximately 230–232°C.
Product Chemical Properties
Chemical Name: 1,4-Bis(2-cyanostyryl)benzene
Product Name: Optical Brightener ER-1
CAS No.: 13001-39-3
Synonyms: Fluorescent Brightener 199, Fluorescent Brightener ER, Fluorescent Brightener ER-I, Optical Brightener ER, Optical Brightener ER-1, FBA 199, B-ER, Cyanostyryl benzene, 2,2'-(1,4-Phenylenedi-2,1-ethenediyl)bisbenzonitrile
EC No.: 235-835-1
Molecular Formula: C24H16N2
Molecular Weight: 332.4 g/mol
IUPAC Name: 2-[(E)-2-[4-[(E)-2-(2-cyanophenyl)ethenyl]phenyl]ethenyl]benzonitrile
Chemical Type: Stilbene Fluorescent Brightener
Main Function: Optical Brightener / Fluorescent Whitening Agent
Maximum ultraviolet absorption wavelength:370 nm (In ethanol)
Maximum fluorescence emission wavelength:435 nm
Product Technical Specification
Appearance: Light yellowish-green dispersion
Purity: ≥99.0
Melting point: 230-232℃
Particle fineness(> 4μmParticle number)pcs : ≤ 3
Applications of Optical Brightener ER-1
Suitable for the whitening and brightening of polyester synthetic fibers, acetate fibers, and PVC plastics.
Performance Characteristics
Fluorescent Whitening Agent ER-330 is a stilbene-type compound; it is insoluble in water but exhibits excellent solubility in most organic solvents and is stable in the presence of cationic softeners. It is non-ionic in nature and compatible with sodium hypochlorite, hydrogen peroxide, and reducing bleaching agents in the same bath. It is suitable for whitening polyester, acetate, and nylon fibers, offering a light fastness rating of 5 and excellent wash fastness. When applied to polyester fibers—whether via exhaust dyeing or pad dyeing—it yields high whiteness values. It is particularly well-suited for the low-temperature adsorption-fixation whitening method for polyester.
Application Method and Dosage: (Example: Adsorption-fixation method)
Process Flow:
Polyester fiber → Immersion → Heating → Holding → Washing → Drying → Finished product
Raw Materials and Formulation:
Fluorescent Whitening Agent ER-330: 0.3–1.5% Anhydrous Sodium Sulfate (Industrial Grade): 1.0% Lavocal AFR: 1.0%
Acetic Acid (98%): 0.55 g/L Liquor Ratio: 1:5–40 pH: 4–5
Prepare the whitening bath according to the formulation and introduce the polyester goods. Raise the temperature to 50°C at a rate of 1–1.5°C per minute and maintain this temperature for 30 minutes. Subsequently, cool down, wash with cold water, and proceed to heat-setting and drying to obtain the finished product.
Packaging
110kg/Drum.
Production Capacity
6500MT/year.
Storage Requirements
Store Optical Brightener ER-1 in tightly sealed original containers in a cool, dry and well-ventilated area.
Protect the product from moisture, excessive heat and direct sunlight.
Optical Brightener ER-1 Bulk Supply from China
Hosea Chem® supplies Optical Brightener ER-1, CAS 13001-39-3, also known as Fluorescent Brightener 199, Fluorescent Brightener ER-I and 1,4-Bis(2-cyanostyryl)benzene, for plastics, PVC, synthetic fibers, coatings and other polymer applications.