Shandong Zhongyang Chemical Co., Ltd.

Optical Brightener BBU

It has good water solubility and can be dissolved in 3-5 times its volume of boiling water. About 300g can be dissolved in each liter of boiling water and about 150g in cold water. It is not sensitive to hard water, and Ca2+ and Mg2+ do not affect its whitening effect.

Classification :

Optical Brightener

WhatsApp : +86-13184107118

E-mail : Sales@zhongyangchem.com

PRODUCT DETAILS

Full name: Stilbene tetrasulfonic acid derivative fluorescent whitening agent

Molecular formula: C40H40N12O16S4Na4

CAS: 16470-24-9
CI: 220
Relative molecular mass: 1165.12 (based on the 1997 international relative atomic mass)
Maximum ultraviolet absorption wavelength: 350nm

Properties: Anionic, blue light
Implementation Standard: HG/T3727-2010

Quality Indicators

Appearance: Pale yellow, uniform powder/granules
Whiteness : ≥ -3
Moisture content %: ≤ 5.0
Mass fraction of water-insoluble matter, %: ≤ 0.5
Fineness (amount of residue passing through a 250 μm sieve), %: ≤ 10

Performance characteristics

It has good water solubility and can be dissolved in 3-5 times its volume of boiling water. About 300g can be dissolved in each liter of boiling water and about 150g in cold water.

It is not sensitive to hard water, and Ca2+ and Mg2+ do not affect its whitening effect.

Anti-oxidation bleaching agent, bleaching agent containing reducing agent (such as sodium hydrosulfite).

It has moderate acid resistance; the optimal pH for whitening is >7.

Product Applications

Used for whitening cotton and viscose fibers.

Suitable for addition to whitening printing paste.

Fluorescent whitening is performed on the pulp.

Fluorescent whitening is performed during the surface coating process.

Fluorescent whitening is performed during the coating process.

Application method: (Taking the padding method as an example)
The temperature of the impregnation solution is 95-98℃.

Stay duration: 10-20 minutes

Bath ratio: 1:20

Steaming time is approximately 45 minutes.

Dosage: 0.1-0.5%

Factory Description

Equipped with advanced equipment and precise detection technology, and supported by sufficient capital, the company provides customers with high-quality optical brighteners and pigment products, and customizes exclusive product solutions according to customer needs. Covering an area of more than 2,000 mu, the company has built a number of standardized production workshops and professional laboratories. Based on complete experimental facilities, it can provide customers with accurate application data support, and ensure stable goods supply with large-scale production capacity.

Our Advantages

1. With our own manufacturing facilities, R&D center, and laboratories, we ensure consistent and reliable quality for products including optical brightening agents, titanium dioxide, solvent dyes, and pigments.

2. We provide OBA products and comprehensive whitening solutions with full technical support throughout the process.

3. Factory direct sales offer prices 3%-5% lower than market rates.

4. Rapid delivery with same-day shipping available.

5. Custom packaging options for optical brighteners, titanium dioxide, solvent dyes, pigments, and more based on client requirements.

6. Complimentary samples provided for testing comparative effects and cost-effectiveness.

7. Prompt response to inquiries with professional and efficient service.

8. Flexible payment options including TT, LC, and other settlement methods.

9. Complete customs clearance documentation backed by years of export experience.

10. DDP door-to-door service with real-time tracking of logistics updates.

Package information

Standard packaging is 25 kg in cardboard drums, cartons, or bags lined with double-layer PE film. Customized packaging is also available upon customer request.

Transportation and storage

Transportation: Fluorescent whitening agents should be protected from impact and direct sunlight during transportation.

Storage: Store in a cool, dry, and well-ventilated warehouse. Shelf life is two years.

FAQ

Q: Are your products suitable for use in synthetic fibers, plastics, detergents, coatings, inks, textiles, and paper?

A: Yes. Our fluorescent whitening agents, solvent dyes, pigments, and titanium dioxide are widely used across multiple industries including synthetic fibers, plastics, detergents, inks, textiles, paper, and rubber. They deliver excellent whitening and color-enhancing effects.

Q: How about after-sales service?

A: If quality problems occur, please provide photos or test reports. We will solve it promptly.

Q: What documents can you provide?

A: Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, MSDS and other customs clearance documents.

Q: Can you ship to Southeast Asia and Africa?

A: Yes. We have rich experience exporting to Southeast Asia, Africa, Middle East and other regions. We support sea freight, air freight and express.

Q: Which ports do you ship from?

A: Mainly from Qingdao and Shanghai port..

Q: How long is the lead time?

A: Normally 7–15 working days after deposit and order confirmation.

Q: What payment terms do you accept？

A: T/T, L/C at sight, Western Union, MoneyGram. Other terms can be negotiated.

Q: What is your standard packaging?

A: 25kg per fiber drum, carton or bag with double PE liner inside. Custom packaging is available.

Q: Can you provide samples?

A: Small samples are available for quality test. We will bear the shipping cost.

Q: What is your MOQ?

A: Normally 500kg–1000kg, depending on the product. Trial orders are acceptable.

Q: Are prices negotiable?

A: Prices are based on order quantity. Larger orders enjoy better discounts.