Send Inquiry

Request To Call Back

Optical Brightener

Get a Price/Quote

MOQ : 100 Kilograms

Optical Brightener Specification

Chemical Name
Optical Brightener

Other Names
Fluorescent Whitening Agent, Optical Whiteners

CAS No
7128-64-5

Type
Anionic/Organic Compound

Application
Textile, Detergent, Paper, Plastic, Ink

Application Method
Added during processing or as post-treatment

Feature
High whiteness, enhanced brightness, excellent stability

Appearance
Yellowish powder or granules

Raw Material
Organic chemicals

Physical State
Solid

Usage
Used to increase whiteness and brightness in various substrates

Shelf Life
2 years

Ingredients
4,4-Bisbenzazolylstilbene derivatives

Solubility
Soluble in water and common solvents

Purity(%)
99%

Storage Conditions
Store in cool, dry place, tightly closed

Odor
Odorless

pH Value
7-9 (1% aqueous solution)

Packaging
25 kg bags or drums (customizable as per requirement)

Light Fastness
Good under normal conditions

Melting Point
210-225C (for powder forms)

Stability
Stable under ordinary conditions of use and storage

Color Index Number
Fluorescent Brightener 28 (C.I. 220)

Toxicity
Non-toxic under recommended use

Optical Brightener Trade Information

Minimum Order Quantity
100 Kilograms

Payment Terms
Cash in Advance (CID), Cheque

Supply Ability
150 Kilograms Ton Per Month Per Month

Delivery Time
Days

Sample Available
Yes

Sample Policy
Free samples are available

Packaging Details
As per customer requirement.

Main Export Market(s)
Asia

Main Domestic Market
South India

About Optical Brightener

Our vision to excel and establish a strong foothold in the market has assisted us to evolve as a prominent organization engaged in offering Europal Optical Brightener. It is an ideal brightening agent for paper and pulp. To comply with set industrial norms, we use superior grade compounds to process this brightener. It is easily soluble in lukewarm light water giving a clear faintly fluorescent blue colored solution. We offer this Europal Optical Brightener at cost effective prices to clients.

Features:

Yellowish color Liquid
Stilbene sulphonic acid derivative
Has good solubility

EUROPAL 2BH LIQUID

TECHNICAL INFORMATION

OPTICAL BRIGHTENING AGENT FOR PAPER AND PULP

GENERAL PROPERTIES

C.I.No.	24
APPERANCE	Yellowish colour Liquid
Chemical Constitution	Stilbene sulphonic acid derivative (Tetra Sulfonic)
CHARACTER	Anionic
SOLUBILITY	Easily soluble in lukewarm light water giving a clear faintly fluorescent blue coloured solution
pH(1% solution)	7.0 - 8.0
SHADE	Bluish white
STABILITY	The liquid is indefintely stable when stored in a cool and dry place away
FASTNESS	The white effect of EUROPAL 2BH on the fibre is fast to light, washing, chlorine, acid alkali perspiration and heat.
RESISTANCE:
Hydrogen peroxide	Very good
Sodium chloride	Moderate
Chlorine pH 11	Fairly good
Alkali	Very good

IN PAPER

EUROPAL IN BEATER: It is mostly applied in the beater. The required quantity depends upon the intensity of the desired white, on the self colour of the material used. raw cellulose, fillers, sizing agents etc., In beater dyeing 0.02- 1% to the weight of pulp of EUROPAL 2BH brings out maximum results. The temperature content should be maximum 40* C and pH value of the circulating water in the beater may be maintained within the limit of 6.5 8.0. Europal 2BH is first dissolved in some hot water & then it is diluted with cold water and added in small portions to the material in front of the material soil. Europal 2BH can also be added while working in refiner or in the tub under neutral conditions. Immediately after the goods are transferred to beater containing water Europal 2BH must be added. Europal 2BH can also be applied with the usual shading dyestuffs.

EUROPAL 2BH IN DIPPING PROCESS: It is essential to whiten the materials before it is submitted to an alter-treatment (Creaping, impregnation). In dip dyeing the paper is dipped in solution containing 0.03 0.05% of Europal 2BH. It is in the interest of best whitening effect to add tiny quantities of ammonia in acidic media.

EUROPAL IN SURFACE DYEING: Fillers used for the manufacture of coated papers are more or less yellowish of greyish. Even in this case an addition of Europal 2BH to the coating of dyeing liquor can improve of the white effect considerably. The amount of Europal 2BH depends on the white effect desired. The addition of Europal 2BH may be between 0.02 0.06 gms per litre of the coating mixture. However for the thick coatings more quantity of Europal 2BH is required.

Superior Whitening and Brightening

With excellent capability to increase the whiteness and brightness of various substrates, Optical Brightener delivers a vivid, clean appearance. Its effect improves the radiance of textiles, paper, plastics, and more, making finished goods stand out with enhanced aesthetic quality.

Safety and Stability Assured

Optical Brightener is non-toxic and free from any detectable odor, ensuring safe use for operators and consumers alike. It exhibits strong stability and good light fastness under ordinary conditions, promoting a long shelf life and consistent performance in every batch.

Versatile Application Across Industries

This product shows remarkable compatibility with numerous substrates and processing environments. Whether incorporated during manufacturing or applied as a post-treatment, it integrates seamlessly in textile, detergent, plastic, ink, and paper processes to achieve high levels of whiteness and brightness.

FAQs of Optical Brightener:

Q: How should Optical Brightener be applied in industrial processes?

A: Optical Brightener can be added during the formulation stage of manufacturing or introduced as a post-treatment, depending on the specific application requirements. It dissolves readily in water and most solvents, allowing for flexible integration in textile, detergent, plastic, paper, and ink production.

Q: What are the primary benefits of using this Optical Brightener?

A: The main advantages include significantly enhanced whiteness and brightness, consistent color quality, and excellent stability during use and storage. It also offers safety benefits due to its non-toxic, odorless nature and poses minimal handling risks when used according to instructions.

Q: When is the best time to add Optical Brightener during the production process?

A: The optimal stage for adding Optical Brightener depends on the intended effect and substrate. For textiles and paper, it is often included during the wet processing or coating stage, while for plastics and inks, it may be mixed directly during compounding or formulation.

Q: Where should Optical Brightener be stored to maintain its effectiveness?

A: Store Optical Brightener in a tightly sealed container, placed in a cool and dry environment away from direct sunlight and excessive moisture. Proper storage ensures the product remains stable and maintains its performance over its two-year shelf life.

Q: What makes this Optical Brightener suitable for various applications?

A: Its anionic/organic nature, high purity, and excellent solubility facilitate broad compatibility across textiles, plastics, detergents, inks, and paper. Additionally, its high melting point and stable performance under regular processing conditions make it adaptable in both high- and low-temperature environments.

Q: Is Optical Brightener safe for use in products with human contact?

A: Yes, when used as recommended, Optical Brightener is classified as non-toxic and does not emit any odor, making it suitable for use in products that come into contact with skin, such as textiles and paper.

Tell us about your requirement