Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Fluorescent Brightener 220
1. Basic Information
Name: Fluorescent Brightener 220
Alias: Optical Brightener BBU, C.I. Fluorescent Brightener 87, OBA 220
CAS No.: 16470-24-9
Molecular Formula: C40H40N12Na4O16S4
Molecular Weight: 1165.12
Category: Anionic stilbene tetrasulfonate optical brightening agent, textile & paper chemical additive
2. Physical and Chemical Properties
Physical Properties
- Appearance: Pale yellow uniform fine powder; liquid form is amber transparent liquid
- Odor: Odorless
- Solubility: Excellent water solubility, 15 g/100mL at 20°C; soluble in hot water; insoluble in ethanol, acetone and organic solvents
- Melting & Decomposition: Melting point >300°C, decomposes above 330°C
- Ion Type: Anionic
- Fluorescence Characteristic: Absorbs UV light at 340–380 nm, emits strong blue fluorescence to offset material yellow tint
- Hygroscopy: Slightly hygroscopic under high humidity
- Aqueous Property: Neutral to weakly alkaline aqueous solution, stable in hard water, not affected by Ca2?/Mg2? ions
Chemical Properties
- Molecular Structure: Stilbene parent skeleton with four sulfonate sodium groups and triazine diethanolamine substituents
- Oxidation & Reduction Stability: Resistant to common bleaching oxidants and reducing agents
- Thermal Stability: Stable under textile padding temperature (95–98°C); long-time high-temperature heating causes decomposition and releases toxic sulfur/nitrogen oxide fumes
- Photostability: Moderately light-sensitive; long-term strong UV exposure weakens fluorescence intensity
- Compatibility: Compatible with anionic surfactants, sizing agents and coating binders; incompatible with cationic dyes, cationic softeners and strong acid substances
3. Main Application Fields
1. Textile Industry (Core Application)
Whitening agent for cotton, viscose, rayon fiber; applied in padding, exhaust dyeing and printing paste processes to boost fabric whiteness and vividness
2. Paper Making Industry
- Pulp internal addition whitening;
- Surface sizing brightener;
- Paper coating whitening for offset paper, copy paper and cultural paper
3. Detergent Auxiliary
Added in laundry detergent to maintain long-term whiteness of white cotton fabrics
4. Industrial Fine Chemical Standard
Reference sample for fluorescence intensity testing of optical brighteners
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 16470-24-9 |
| Molecular Formula | C40H40N12Na4O16S4 |
| Appearance | Pale yellow uniform powder without lumps |
| Relative Fluorescence Intensity | 100±3% vs standard sample |
| Moisture Content | ≤5.0% |
| Water Insoluble Substances | ≤0.5% |
| Fineness (250μm sieve residue) | ≤10% |
| Whiteness WCIE | ≥ -3 |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 25kg woven bag with PE inner liner / nitrogen-sealed plastic drum for liquid grade |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 °C; isolate from strong acid, cationic chemicals and direct sunlight |
| Transportation Requirement | Moisture-proof sealed packaging, avoid mixing with acidic cargo |
| Shelf Life | 36 months under intact sealed packaging |
Safety Warning
Mild irritant anionic fluorescent powder. Dust irritates eyes, nasal tract and skin; inhalation may cause mild respiratory discomfort. All operations shall be carried out in ventilated workshop with dust mask and chemical-resistant gloves. Avoid high-temperature burning which produces toxic corrosive gas. Waste aqueous solution can be neutralized and discharged after precipitation treatment; solid waste belongs to general industrial organic waste and disposed by licensed hazardous waste treatment institutions.
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