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Optical Brightener Ob 1

Price 300 INR/ Kilograms

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MOQ : 50 Kilograms, ,

Optical Brightener Ob 1 Specification

Water Resistant
Yes

Smell
No distinct smell

Density
1.42 Gram per cubic centimeter(g/cm3)

Resistance
Good resistance to heat and chemicals

Shape
Powder

Melting Point
357 360C

Solubility
Insoluble in water, soluble in organic solvents

Rubbing Resistance
Excellent

Refractive Rate
1.645

Taste
Odorless

Boiling point
Not applicable (decomposes before boiling)

Molecular Formula
C28H18N2O2S

Moisture (%)
0.5%

Poisonous
Yes

Solvent Color
Yellow-Green

Ph Level
Neutral

EINECS No
216-245-3

Shelf Life
24 Months

Chemical Name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene

CAS No
1533-45-5

Type
Optical Brightener

Usage
Textile, Plastic, Polyester, and Polymer Industry

Purity(%)
99%

Application
Used to enhance whiteness and brightness of polymers and fibers

Appearance
Yellow Green Crystalline Powder

Physical Form
Solid

Grade
Industrial

Light Fastness
Grade 7-8 (excellent resistance to fading)

Hazard Class
Non-hazardous

Storage Conditions
Store in a cool, dry place, away from direct sunlight

Compatibility
Compatible with most polymer processing systems

Decomposition Temperature
370°C

Transparency
High transparency in application

Heavy Metals
Free from heavy metals

Fluorescence Range
Absorption: 374 nm, Emission: 434 nm

Environmental Impact
Environmentally safe in recommended usage concentration

Maximum Dosage
0.02-0.05% depending on application

Particle Size
200-300 mesh

Packing
25 kg fiber drum/bag

Optical Brightener Ob 1 Trade Information

Minimum Order Quantity
50 Kilograms, ,

Supply Ability
1000 Kilograms, , Per Month

Delivery Time
1 Week

About Optical Brightener Ob 1

Optical Brightener (OB-1), offered by us is a chemically stable as well as heat resistant whitener that is used to boost the whiteness of several materials. This is provided with brighter appearance and is mainly used for the plastic manufacturing industry so as to give a whiter appearance. Optical Brightener (OB-1), can create brilliance in the fluorescence process and is highly useful for the fibers of polyester as well as nylon. It is highly suited for the temperature engineering plastics, low volatility, good light fastness, outstanding whitening properties etc. It has wide compatibility with organic solvents.

Product details

CAS No	1533-45-5
Form	Powder
Melting Point	355~360 degree C
Color	Green
Purity	Min 99.5%
Loss On Drying	Max 0.5%

Exceptional Whiteness and Brightness Enhancement

Optical Brightener OB-1 is formulated to provide outstanding brightness and whiteness for polymers and fibers. Its high transparency and strong fluorescence (absorption at 374 nm, emission at 434 nm) make it an ideal solution for manufacturers aiming to achieve brilliant results in textiles, plastics, and polyesters. Its yellow-green shade easily integrates with most polymer matrices, ensuring vivid and lasting effects.

Reliable Performance Under Extreme Conditions

With a light fastness grade of 7-8, Optical Brightener OB-1 is designed to withstand prolonged exposure to sunlight and harsh environments without losing effectiveness. Its excellent resistance to heat, chemicals, rubbing, and water ensures stable performance, making it suitable for demanding industrial processes and outdoor applications.

Safe Handling and Environmental Protection

This brightener is classified as non-hazardous, non-poisonous, heavy metal-free, and environmentally safe when used as recommended. Its neutral pH, low moisture content, and odorless nature make it both user-friendly and environmentally responsible. Proper storage in a cool, dry area will preserve its quality for up to 24 months.

FAQs of Optical Brightener Ob 1:

Q: How should Optical Brightener OB-1 be stored to maintain its effectiveness?

A: Optical Brightener OB-1 should be stored in a cool, dry place away from direct sunlight. Ensure the packaging, which is typically a 25 kg fiber drum or bag, is sealed properly to prevent moisture ingress and preserve its properties throughout its 24-month shelf life.

Q: What is the recommended process for incorporating Optical Brightener OB-1 into polymers or fibers?

A: OB-1 can be mixed during the polymer processing stage, such as in extrusion or injection molding for plastics, or in fiber production for textiles. Its fine particle size (200300 mesh) and compatibility with most systems facilitate even dispersion and optimal whitening effect. The recommended dosage ranges from 0.02% to 0.05%, depending on the application.

Q: What are the main benefits of using Optical Brightener OB-1 in manufacturing?

A: Using OB-1 enhances product whiteness and brightness, offers superior light and chemical resistance, and ensures long-lasting color stability. Its high transparency and excellent rubbing resistance improve the visual appeal and durability of end products, making it ideal for textiles, plastics, and polyesters.

Q: Is Optical Brightener OB-1 safe for users and the environment?

A: Yes, OB-1 is classified as non-hazardous, non-poisonous, and free from heavy metals. It is environmentally safe when used within the recommended concentrations, making it suitable for responsible manufacturing practices.

Q: What is the appearance and physical state of Optical Brightener OB-1?

A: The product appears as a yellow-green, odorless crystalline powder that is insoluble in water but soluble in organic solvents. Its high purity (99%) ensures consistent results across applications.

Q: When should Optical Brightener OB-1 be chosen over alternative whitener agents?

A: OB-1 is the preferred choice when excellent light fastness, heat and chemical resistance, and high transparency are required, particularly in polymeric and synthetic fiber applications. Its superior performance and compatibility make it suitable for both indoor and outdoor use.

Q: Where can Optical Brightener OB-1 be applied for optimal results?

A: Optimal applications include the textile, plastic, polyester, and general polymer industries. It is commonly used to brighten synthetic fibers, plastic products, and films where enhanced whiteness and durability are desired.

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