Optical Brightener

Optical brighteners, also known as fluorescent whitening agents (FWAs) or optical brightening agents (OBAs), are chemical compounds used in various industries, primarily in textiles, paper, and detergents. These substances absorb ultraviolet (UV) light and re-emit it as visible blue light, making colors and whites appear brighter and more vivid. Optical brighteners are often added to laundry detergents to give the illusion of cleaner and whiter clothing by enhancing their visual brightness. They are also used in the paper industry to improve the brightness and whiteness of paper products. Optical brighteners' ability to improve the appearance of materials under certain lighting conditions makes them valuable in enhancing the visual quality of a wide range of consumer and industrial products.

Product information
Product name: OPTICALBRIGHTENER BA

Color Index No: C.I.113

Synonyms: FBA 113; OBA 113,Fluorescent Brightener BA; Optical Brightener Agent BA

Molecular Structure:
Molecular Formula: C40H42N12O10S2Na2

Molecular Weight: 960.94

CAS No: 12768-92-2

C.I. No.: C.I.113

Appearance: straw yellow uniform powder

E-value: 370

Features:
Anionic, resistant to PH4.5-11.

Applications
Mainly used in pulp brightening, surface sizing and coating, etc, with high acid resistance. It is the first choice to produce paper of high brightness requirements
Reference dosage:
1. When brighten in pulp, BA should be added before alum or cationic auxiliary agent; dosage: 0.05-0.4% (of absolute dry pulp).
2. In surface sizing, it can work with CMC, PVA, starch, or anionic or cationic synthetic sizing agent.
3. In coating, it can be used at any stage of coating production in the form of aqueous solution after dissolve.
Package & Storage:
10kg or 25kg/ craft paper bags. It canbe packed in other forms according to user's requirements.

Shelf life: not more than 24 months inthe room temperature.

Product information
Product name:Tonex white SWN

Color Index No: C.I.140

Synonyms: FBA 140; OBA 140,Fluorescent Brightener SWN; Optical Brightener Agent MDAC, Optical Brightener MDAC

Molecular Structure:


Molecular Formula : C14H17NO2

Molecular Weight: 231.28

CAS No 91-44-1/61968-71-6

C.I. No.: C.I.140

Appearance off white powder

Melting point :70.5-73

Assay: 98%

Fineness 200 meshes

Features:
1.Multipurpose brightener with excellent whiteness, soluble in ethanol but insoluble in water.
2.having properties of good solubility and compatibility.
Applications
This product is mainly used for whitening of wool,natural silk, nylon, acetate fiber and triacetate fiber. It can also be usedfor whitening of cotton and cyanamide, and can be used for whitening ofcellulose fiber by adding resin. Reference dosage:
The dosage is: nylon 0.05-0.3%, wool 0.05%-0.35%,acetate fiber 0.05-1.4%, triacetate fiber 0.1-2%, cylandex 0.05%-0.8%.
In addition, this product can be added to soap and detergent for washingfabrics, effective in the PH=3-11 range, can improve the appearance of thefabric after washing. It can also be used for coated paper, plastic andchromatic printing coatings.
Package & Storage:
25kg fiber drumor for the special demand .

Should be storedin cool, dry and ventilate place, and storage time should not exceed 24 months

Product information
Product name: OPTICALBRIGHTENER CBS-X (CBS-351)

Color Index No: C.I.351

Synonyms: FBA 351; OBA 351,Fluorescent Brightener CBS-X (CBS-351); Optical Brightener Agent CBS-X(CBS-351)

MolecularStructure:

Molecular Formula: C28H20S2O6Na2

Molecular Weight: 562.5643

CAS No: 27344-41-8

EINECS No: 248-421-0

Appearance: canary yellow powder (Granular)

E-value: 1140

Features:
1.It has high whitening effect on cellulose fiber in cold and warm water.
1. Repeated washing does not causeyellowing or discoloration of the fabric.
2. It has excellent stability in super concentrateddetergen
Applications
Mainlyused in high-grade synthetic washing powder, super concentrated liquiddetergent, can also be used for soap, soap whitening.
Reference dosage:
Fluorescentbrightener CBS-X can be added to any process in the production of the type ofdetergent, such as dry mixing, spray drying, agglomeration, spray mixing, etc. Dosage: 0.1, 0.5%.
Package & Storage:
10kg or 25kg/ fiber drums. It can bepacked in other forms according to user's requirements.

Shelf life: not more than 24 months inthe room temperature.

Product information
Product name: OPTICALBRIGHTENER ER Liquid(PS-1. ER330)

Color Index No: C.I.199

Synonyms: FBA 199; OBA 199,Fluorescent Brightener PS-1(ER330); Optical Brightener Agent PS-1(ER330)

Molecular Structure:
Molecular Formula: C24H16N2

Molecular Weight: 332.3972

CAS No: 13001-39-3

C.I. No.: C.I.199

Appearance: yellowish pulpy liquid

E-value: 330

Features:
Thisproduct is mainly used for whitening and brightening of blending fabrics suchas polyester and polyester cotton, polyester silk, polyester yarn, polyesterramie, polyester wool as well as whitening of chemical fiber and plastic. Thisproduct applies to pad dyeing and HTHP dip dyeing, especially low temperatureadsorption and high temperature setting process.
Applications
1. Pad-dyeing hot melt method:

Use quantity: 1.5-3g/L

Process flow: two dip dyeing and two paddyeing (mangle expression 70) pre-drying (100) curing and setting (180 190, 40-30s).

2. HTHP dip dyeing method:

Use quantity: 0.2 0.5% (o.w.f)

Dyeing temperature: 120 130

Dyeing time: 30 - 60 minutes

PH value: 4.5 - 5.5 (adjusted withacetic acid)

Low temperature adsorption and hightemperature color development dyeing method:

Use quantity: 0.5 1.0% (o.w.f)

Dyeing temperature: 50 60

Dyeing time: 30 minutes

PH value: 4.5 - 5.5 (adjusted withacetic acid)

Process flow: add BC-100 whitening agentand additive (anhydrous sodium sulphate 1-2% relative weight of dyed cloth,acetone is adjusted in PH) and fabric to dye bath at room temperature temperature rises to 50, deying for 30min washing dehydration and pre-drying (100) setting and baking (180-190, 40-30s).

Package & Storage:
25kg/50kg plastic drums. It can be packedin other forms according to user's requirements.

Shelf life: not more than 12 months inthe room temperature.

Cautions:

1.If suspension liquid is foundprecipitated and separated, just shake it before use, which does not affect theuse effect.

2.Please note that use this product within its yellow spot, i.e. paddyeing 5g/l,dip dyeing 0.8%(o.w.f). If use this product beyond its yellow spot, it will be easy to becomeyellow.

Appearance: Yellowish green powder
Melting point: 357~361¡ãC
Assay: 98%
Volatiles Content 0.5%max
Ash content: 0.50%max


25kg/drum

Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) by fluorescence. These additives are often used to enhance the appearance of color of fabric and paper, causing a "whitening" effect; they make intrinsically yellow/orange materials look less so, by compensating the deficit in blue and purple light reflected by the material, with the blue and purple optical emission of the fluorophore.
Optical brightening agents (OBAs) are chemicals that are added to everything from linen slacks and silk blouses to socks and underwear. They use the process of fluorescence to trick your eyes into believing your clothes are whiter and brighter than they actually are. To ensure your garments enhance and retain this whiter than white appearance, many laundry detergents contain optical brighteners, too.

APPLICATION
Clear and pigmented lacquers
Paints
Molded thermoplastics
Films and sheets
Printing inks
Synthetic leather
Ultraviolet tracer
Photo processing solutions
Adhesives
Fibers
Thin layer chromatography (TLC)
Overprint varnishes
Printing inks

Optical Brightener OB is a heat-resistant and chemically stable fluorescent brightening agent that increases whiteness and provides brighter colors. It is used to counteract the yellow color of the polymer and produce a whiter appearance. Optical brighteners create brilliance through the fluorescent process of invisible ultraviolet absorption and visible blue emission. Optical Brightener OB Pure Powder 99%min with CAS No.7128-64-5.

OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester melt. This whitening agent is similar to Whitex SNK,Uvitex ERT and Eastobrite OB-1 made in foreign country.