PRODUCT
Fluorescein Sodium CAS 518-47-8
CAS:518-47-8 | C20H13NaO5 |MW：356.31 | EINECS NO：208-253-0
Payment: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Transporta: Ocean, Land,Air, DHL，TNT
Port: Shanghai Port, Qingdao Port
Description
As a typical azo dye that is water-soluble, Fluorescein Sodium has physical characteristics that reflect its molecular structures. Fluorescein Sodium is a yellow or orange-yellow powder that appears brightly colored at room temperature and under normal pressure. The reason for this is the intense absorption of blue-purple bands in visible light, by its molecular conjugate systems. This complements and reflect yellow light. Fluorescein Sodium’s solubility is one of its key physical properties. It is highly water soluble, forming an opaque and clear yellow solution. This makes it ideal for aqueous coloring processes. It is also soluble in non-polar solvents like benzene or ether, but only moderately. The dissolution behaviour reveals the presence of strong hydrophilic groups in its molecules, which makes it easier to form hydrogen bond with water molecules. Fluorescein Sodium has excellent thermal stability under normal application conditions. It can maintain its chemical structure without decomposition at temperatures required for textile finishing and dyeing. If it is exposed for a prolonged period of time to temperatures much higher than these, the molecules can fracture or carbonize. This will result in color changes and performance degrading. The fineness of Fluorescein Sodium is another important physical parameter. Finer powders have a greater surface area which allows them to dissolve and diffuse more uniformly in the water. This affects the uniformity of the dyeing process. Fluorescein Sodium’s performance in industrial applications is based on these fundamental physical properties.
Product Images & Packaging
Product Parameters
| Fluorescein Sodium Chemical Properties |
| Melting point | 320 °C |
| bulk density | 600kg/m3 |
| density | 0.579[at 20℃] |
| vapor pressure | 2.133hPa |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: soluble1mg/mL |
| Colour Index | 45350 |
| form | Powder |
| pka | 2.2, 4.4, 6.7(at 25℃) |
| color | Rust-orange |
| Odor | Odorless |
| PH | 8.3 (10g/l, H2O, 20℃) |
| PH Range | Pink uorescence (4.0) to green uorescence (6.0) |
| Water Solubility | 500 g/L (20 ºC) |
| λmax | 491nm, 493.5nm, 490nm |
| Merck | 14,4159 |
| BRN | 3833041 |
The application of Fluorescein Sodium
Fluorescein Sodium is a water-soluble monoazo color that has a variety of uses, from textile dyeing in the past to biomedical research today.
1.Basic colorants for the textile and leather industries
Fluorescein Sodium is used in the following applications. It is used primarily as an acidic dye to dye polyamide and protein fibers.
Its main applications are in wool and silk. The amino groups of these fiber molecules become protonated, positively charged and bind strongly with the sulfonic anions carried by Fluorescein sodium dye molecules via ionic bonding. This results in efficient and stable dyeing. It provides a bright and full-bodied yellow.
Fluorescein Sodium can also bind to acidic dyes because nylon contains amino groups. This is why it’s widely used in dyeing different nylon fabrics such as clothing, swimwear and tents. The dyes they use are usually very fast to wet treatment.
Leather is primarily composed of collagen and dyeing is done in a similar way to protein fibers. The dye Fluorescein Sodium can be used to give tanned skin a variety of yellow shades, or blend more complex colors, such as browns and greens.
Selective dyeing of nylon or protein components can be used to highlight specific components in blended materials.
Fluorescein Sodium can be used in these applications not only for yellow dyeing but also as one of three primary colors. It can be blended in different proportions to produce a wide range of colors, from orange to green, brown to black and nearly the entire chromatographic spectrum. It is an important component of color matching formulas.
2. Staining, labeling and biomedical research
Fluorescein Sodium is no longer a simple colorant, but a biological tracer and coloring agent.
Fluorescein Sodium, due to its molecular characteristics, is sometimes used as a tracer extracellular. Fluorescein Sodium can be injected into cerebrospinal liquid or certain tissue spaces in living organisms. It will spread along extracellular pathways and help researchers visualize fluid flow or tissue boundaries.
It can be used to highlight specific tissue structures or colorless tissues in a microscope.
3.Additives for color in industrial and consumer products
Fluorescein Sodium is a popular choice for coloring industrial and everyday products because of its bright color and durability.
The Fluorescein Sodium is also used in the production of colored paper and cardboard. It can be used in inks for yellow printing inks, writing inks, highlighter pens, etc.
Fluorescein Sodium can be added to some personal cleansing products, such as liquid soaps, shampoos, and shower gels, in order to enhance the visual appeal and improve their appearance. Some non-resident cosmetics may contain it.
Magnesium Hydroxid's Procurement Guide
Procurement Guidelines
1. Sample Policy
We can provide a 2-3g free trial package (shipping fee required)
2. Batch procurement
Packaging: 25kg/bag; 220kg/barrel; Special packaging according to your needs
MOQ：1kg
3. Customized services
Concentration customization (90% -99%)
Paeonol’s outsourcing services
FAQ
Yes, we have our own factory called ” ZhiShang Industry Group “
Yes, we have GMP certificate for some products, and we can provide DMF as well.
-Quality you require, eg. Assay, Purity, or single impurity
-Quantity you need
-Standard you want, such as USP, EP, JP etc.
Escrow and T/T in advance are highly recommended. We can accept Western Union, Money Gram and Paypal as well.
For sample(less than 1kg), in about 3 working days after payment; for larger orders (more than 1kg), in about 7 working days after payment.
For samples, we will send by TNT/DHL/FEDEX/UPS express, usually it takes about 3-5 day.
Related References
Manufacturer of Magnesium Hydroxid
Achievements
Advantage
Service
FAQ
Advice on Shipping
Achievements
Zhishang Bio is based in Shandong, serves the whole country, faces the world, and is determined to become an excellent supplier and service provider in the chemical industry.
As a top manufacturer of cosmetic raw materials, disinfectants, flavors and fragrances in China, we are committed to producing high-quality products and have won high praise from customers all over the world.
In the next 10 years or even longer, Zhishang Bio will always adhere to the tenet of quality first and reputation first, and devote itself to providing customers with thoughtful and perfect services.
As a professional Magnesium Hydroxid manufacturer, Zhi shang Bio has served more than 6,000 customers around the world. Because of our high-quality products and professional services, we have won high praise from most of our customers.
Advantage
Zhishang Bio is a professional enterprise engaged in the research and development, production, and sales of chemical raw materials. It has a strong supply chain system and strict quality control standards to ensure the provision of high-quality products with high purity and stability to customers.
Zhishang Bio’s core strength is its independent research and design capabilities. It has advanced production equipment, testing laboratories and can customize chemical raw materials to meet the market demands. This includes pharmaceuticals, electronic, coatings and agricultural applications.
Zhishang Bio’s supply chain management is based on long-term relationships with domestic and international suppliers of high quality to guarantee a stable supply, optimize logistic systems, and achieve efficient distribution. This helps reduce the cost of customer purchases.
We adhere to international environmental standards and we also adhere to the concept that environmental protection and safety production are important. All production processes must comply with these standards in order to guarantee that our products will be green and sustainable.
With a professional technical team and comprehensive after-sales service, Zhishang Bio can provide customers with precise technical support, solve application problems, and help customers enhance product competitiveness.
We are always customer-oriented and committed to becoming a trusted chemical raw material partner.
Service
Zhishang Biography is dedicated to using clients extensive and expert service, including chemical raw material. The customers will certainly receive hassle-free, efficient and one-stop options.
1. Custom-made Supply Solutions
Zhishang Bio provides tailored services for clients in the chemical basic material sector, including special bit dimension, solvent residue control, stability optimizations and more. Clients can personalize their services to satisfy details requirements in industries such as drugs, electronic devices, and finishings.
2. Strict quality assurance
Zhishang Bio utilizes advanced screening equipment and stringent quality examination procedures, in addition to various other files, to guarantee that every batch of products is certified with international criteria such ISO GMP, REACH, and so on. Customers are also given with full quality records and conformity documents.
The supply chain is secure
Zhishang Bio has actually established lasting calculated collaborations with worldwide makers of top notch raw materials to make certain a secure supply, maximize the storage facility and logistics system, and assistance both small-scale examinations and large orders. It adjusted to the changing requirements of clients by responding flexibly to these changes.
4. Technical support
Zhishang Bio’s technical group can offer suggestions on product applications, formula optimization and analysis of industry patterns to aid clients fix technological troubles during production and boost item efficiency.
5. Efficient after-sales service
Zhishang Bio provides complete monitoring, reacts to client requests and delivers promptly. This will certainly make certain customer complete satisfaction.
Zhishang Biography intends to help consumers expand their service by providing the very best solutions and chemical resources.
FAQ
DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
Shandong Look Chemical
Advice on Shipping
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
Zhishang Bio company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.
And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.
The company integrates research and development, production, and trade, with a modern production base, advanced testing equipment, and an experienced technical team to ensure that products reach industry-leading levels in purity, stability, and environmental friendliness.
