Production
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Acid Orange 33
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Acid Yellow 23 Detergent dye
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Solvent blue 104
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Pigment yellow 74
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Solvent Yellow 114
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Pigment yellow 12
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Solvent Blue 122
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Solvent Blue 45
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Solvent Red 195
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Pigment red 48-3
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Optical Brightener OB-1
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Solvent Green 5
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Solvent Green 3
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Solvent Red 207
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COSMETIC GRADE TITANIUM DIOXIDE AMA99
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Phthalocyanine green 7
Optical Brightener BA
Product Name: Optical Brightener BA / Fluorescent Brightener 113
Chemical Name: Disodium Fluorescent Brightener 113 / Stilbene Sulfonic Acid Derivative
Color Index: C.I. 113
CAS: 12768-92-2
Molecular Formula: C₄₀H₄₂N₁₂Na₂O₁₀S₂
Formula Weight: 960.94 g/mol
Synonyms: Fluorescent Brightener 113; FBA 113; Optical Brightening Agent BA; C.I. 113; Disodium Fluorescent Brightener 113; Blankophor BA; Stilbene-based Optical Brightener
Application:
Paper Manufacturing (Pulp Whitening, Surface Sizing, Coating), Textiles (Cotton, Linen, Cellulose Fibers, Nylon), Laundry Detergents, Soaps
Description
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1.Product Description
Achieve Exceptional Whiteness with Optical Brightener BA – The Premium Anionic Brightener for Paper and Textiles.
Optical Brightener BA, internationally designated as Fluorescent Brightener 113 (C.I. 113), is a high-performance stilbene-based fluorescent whitening agent engineered specifically for the paper and textile industries . This sophisticated anionic brightener features a unique disulfonic molecular structure that delivers outstanding acid resistance and consistent whitening performance across a wide pH range .
The advanced molecular architecture of BA absorbs invisible ultraviolet radiation in the 340-360 nm range and re-emits it as brilliant blue-violet visible light, effectively neutralizing the natural yellowish cast of paper pulp, cellulose fibers, and textiles . This optical compensation mechanism creates a radiant, "whiter-than-white" appearance that enhances the perceived quality of finished products.
What truly distinguishes Optical Brightener BA from conventional whitening agents is its exceptional performance at lower pH values. When applied in the pH range of 4.5 to 7, its whitening effect is significantly superior to other brighteners, enabling 15-25% dosage savings compared to standard alternatives . Additionally, BA never turns yellow, ensuring a stable whitening effect over time.
Our Optical Brightener BA is manufactured in accordance with HG/T 3990-2007 industry standards , offering ≥99% purity with consistent batch-to-batch performance, low water insolubles, and compliance with international quality requirements .
2.Product Specifications (Technical Data Sheet)
| Property | Specification | Insight |
| Product Name | Optical Brightener BA (Fluorescent Brightener 113) | Premium anionic brightener for paper and textiles |
| Appearance | Light yellow to yellow uniform powder | Free-flowing, odorless powder with excellent dispersion |
| CAS No. | 12768-92-2 | Verified chemical registry number |
| EINECS/EC No. | 249-323-0 | Listed in European inventory |
| Molecular Formula | C₄₀H₄₂N₁₂Na₂O₁₀S₂ | Disulfonic stilbene structure |
| Formula Weight | 960.94 g/mol | |
| Solubility | Readily soluble in water | Rapid dissolution for easy processing |
| Style | Anionic / Stilbene Fluorescent Whitening Agent (FBA) | Anionic character for compatibility with surfactants |
| Maximum UV Absorption (λmax) | 340-360 nm (typical: 348±1 nm) | Efficient absorption of near-UV radiation |
| Whitening Intensity | 100-102% (vs. standard) | High tinting strength with minimal dosage |
| Purity | ≥ 99.0% | High purity ensures consistent performance |
| Moisture Content | ≤ 3.5% | Low moisture ensures stability |
| Water Insolubles | ≤ 0.2% | High purity with minimal residue |
| pH Value (1% solution) | 8-10 | Slightly alkaline, suitable for most applications |
| Optimal pH Range | 4.5-7 | Superior whitening effect in slightly acidic to neutral conditions |
| Melting Point | > 300°C (decomposes) | Excellent thermal stability |
| Storage Conditions | Store in cool, dry, ventilated place; avoid moisture and heat | Shelf life: 1 year under proper storage |
| Packing | 25 kg cardboard cartons / fiber drums with PE inner liner; custom sizes available | Secure, moisture-proof packaging |
| Application | Paper pulp, surface sizing, paper coating, cotton, linen, cellulose fibers, nylon, laundry detergents | Versatile across multiple industries |
3.Product Application
Paper Industry – Primary Application:
Optical Brightener BA is widely used in paper manufacturing for its fast dissolution speed, high whiteness, and stable whitening effect . It never turns yellow and delivers consistent performance across various paper production processes:
| Application Method | Recommended Dosage | Process Notes |
| Pulp Whitening | 0.05-0.4% (on dry pulp) | Add before alum or cationic additives for optimal results |
| Surface Sizing | 0.1-0.3% (on dry pulp) | Combine with CMC, PVA, or starch for enhanced performance |
| Paper Coating | 0.1-0.3% (on dry coating) | Provides bright bluish tone with excellent whitening effect |
Textile Industry:
BA delivers outstanding whitening performance on cellulose and synthetic fibers:
| Fiber Type | Recommended Dosage | Application Conditions |
| Cotton & Linen | 0.08-0.3% (o.w.f) | Bath temperature: 60-100°C; bath ratio: 1:20-40 |
| Cellulose Fibers | 0.08-0.3% (o.w.f) | Direct addition to dye vat after dissolution in water |
| Nylon (Polyamide) | 0.1-0.3% (o.w.f) | Suitable for exhaust dyeing processes |
| Light-colored Cellulose Fabrics | 0.08-0.3% (o.w.f) | For brightening existing fabrics |
Detergent Industry:
Optical Brightener BA can be incorporated into laundry detergent formulations for fabric whitening benefits during the wash cycle . Its anionic nature ensures compatibility with standard detergent surfactants.
4.Storage
This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.
5.Packaging
Usually is 25Kg/drum or paper box or bag with inner double PE liner Or provide customized packaging according to customer requirements.
6.Our advantage
1) Provide free samples for testing or comparing the effect difference and cost performance.
2) Fast response speed, customers' questions at any time will be responded to in two hours.
3) Fast delivery: the fastest delivery can be made on the same day.
4)Different packaging solutions: provide various packaging options according to customer requirements.
5)Technical guidance: provide improved whitening and coloring formulas and guidance according to customer production materials.
6) Sample retention or sample mailing before bulk delivery.
7) Providing certificationes, such as Reach certification.
8) Different payment methods: TT LC, etc.
9) Providing door-to-door DDP service.
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