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Optical Brightener OB-1 Fluorescent Whitening Agent for Plastics PVC PE PP Industrial Grade NBT

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Nav Bharat Technologies
Service Provider , Manufacturer, Retailer, Trader, Brand Owner — Delhi, Delhi, India · Replies in ~24–48 hours
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Price on request In stock
Inclusive of all taxes
MOQ: 1 Kilogram
Lead time: On request
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Origin: India
Export ready
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Export Snapshot
Minimum order
1 Kilogram
HSN Code
3204
Origin
India
Lead time
On request
Port of dispatch
On request
Packaging
25 kg bags / custom bulk
Shelf life / storage
As per product specification
Export markets served
Global markets
Ability to customise
As per OEM brief
Values shown are for Nav Bharat Technologies.
Company Nav Bharat Technologies
Nav Bharat Technologies logo
Nav Bharat Technologies

Registered address: North West Delhi, India. Industry: Chemicals, Dyes & Paints › Lubricants & Petrochemicals.

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Established
Not shared
Employees
–
GST
07ADWPG5013E1ZO
IEC code
Not shared
Export markets
Global markets
Member since
Oct 2023
Turnover
On request
Incorporation type
On request
Product details

Optical Brightener OB-1 by NBT


NBT offers Optical Brightener OB-1, chemically known as 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene, a premium fluorescent whitening agent widely used in plastics processing. OB-1 absorbs UV light and re-emits it as visible blue light, creating a bright white appearance in finished goods.


Key Applications:

- PVC rigid and flexible profiles, pipes, and sheets

- Polyethylene (PE) films and packaging

- Polypropylene (PP) fibers and nonwovens

- Masterbatch manufacturing

- Synthetic textiles and fibers


Product Specifications:

- Chemical Name: 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene

- CAS No: 7128-64-5

- Appearance: Yellow-green powder/granules

- Purity: 99%+

- Melting Point: 199-203°C

- UV Absorption: 374 nm

- Emission: 435 nm


Why Choose NBT OB-1:

- Consistent purity and performance batch to batch

- Suitable for high-temperature plastic processing

- Compatible with most polymer systems

- Bulk supply from India

- ISO-compliant manufacturing

- Technical support available

Description provided by Nav Bharat Technologies.

2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene

Fluorescent whitening / optical brightening

PVC, PE, PP plastics

Yellow-green powder or granules

99%+

7128-64-5

199-203°C

India

NBT

25 kg bags / custom bulk

Specifications
Product Name
Optical Brightener OB-1
Brand
NBT
Chemical Name
2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene
CAS No.
7128-64-5
Function
Fluorescent whitening agent / optical brightener
Application
PVC, PE, PP plastics, films, masterbatches
Additional Applications
Synthetic textiles and fibers
Appearance
Yellow-green powder or granules
Purity
99%+
Melting Point
199-203°C
UV Absorption
374 nm
Emission
435 nm
Origin
India
Manufacturing Standard
ISO-compliant manufacturing
Supply Type
Bulk supply / factory direct / export-ready
Minimum Order Quantity
1 Kilogram
Packaging
25 kg bags / custom bulk
Use cases
Category
Optical Brightening Agents
Primary application
Brand
Not specified
Product type
Product
Logistics & handling
Lead time
On request
Packaging
25 kg bags / custom bulk
Storage condition
As recommended by supplier
Origin
India
Form
As listed by supplier
Commercials Nav Bharat Technologies
Minimum order
1 Kilogram
Lead time
On request
Payment terms
As per negotiated commercial agreement
Frequently asked by buyers
What plastics can Optical Brightener OB-1 be used in?

It is used in PVC, PE, and PP plastics, as well as films and masterbatches. It is also listed for synthetic textiles and fibers.

What is the chemical name of OB-1?

The chemical name provided is 2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene.

What is the purity of this OB-1 grade?

This NBT OB-1 is specified at 99%+ purity.

What is the physical form of the product?

It is supplied as a yellow-green powder or granules.

What packaging options are available?

Standard packaging is 25 kg bags, with custom bulk packaging available.

What is the minimum order quantity?

The minimum order quantity is 1 kilogram.

Is this product suitable for high-temperature plastic processing?

Yes, the product description states it is suitable for high-temperature plastic processing and compatible with most polymer systems.

What performance effect does OB-1 provide in plastics?

OB-1 absorbs UV light and re-emits visible blue light, which increases the perceived whiteness and brightness of finished plastic products.

Question not answered? Sellers typically reply within 24–48 hours.

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