
PRODUCT
Description
1. Chemical homes and classification
Acid Green 25 C.I. 61570, frequently referred to as Alizarin Environment-friendly, belongs to the anthraquinone acid dye course. Its chemical name is 2,2 ‘- [( 9,10-dioxo-9,10- dihydroanthracene-1,4- diyl) diamine] bis (5-methylbenzenesulfonic acid) disodium salt, with a molecular formula of C TWO EIGHT H ₂ ₀ N Two Na ₂ O EIGHT S two and a molecular weight of about 622.58.
The molecular framework of Acid Green 25 is centered around an anthraquinone ring, which is linked to a methyl benzene ring including sulfonic acid teams on both sides via an amino group. This structure offers it anionic buildings.
2. Physical attributes and morphology
Acid Green 25 appears as an eco-friendly powder, soluble in o-chlorophenol, slightly soluble in acetone, ethanol, and pyridine, insoluble in chloroform and toluene. It shows up dark blue in concentrated sulfuric acid and turns emerald blue after dilution. It has strong water solubility, with a solubility of up to 36 g/L at 20 ° C. The melting point is 235-238 ° C, and the UV absorption wavelengths λ max are 608 nm and 642 nm.
3. Market positioning and prep work background
Acid Green 25 is a vital range of anthraquinone acid dyes, which is synthesized by condensation of 1,4-dihydroxyanthraquinone with p-toluidine and after that sulfonation response. The Acid Green 25 anthraquinone skeletal system enhances it with excellent light fastness and a bright green tone, exceeding azo acid dyes. Acid Green 25 is detailed as D&C Eco-friendly No. 5 and is one of the authorized colorants for drugs and cosmetics by the United States Food and Drug Administration.
Product Images & Packaging



Acid Green 25 Parameters
| Acid Green 25 Chemical Properties |
| Melting point | 235-238 °C(lit.) |
| storage temp. | room temp |
| Colour Index | 61570 |
| form | powder |
| color | Bluish green powder |
| Water Solubility | 36 g/L (20 ºC) |
| λmax | 608 nm 642 nm (2nd) |
| ε(extinction coefficient) | ≥10000 at 604-612nm ≥10200 at 640-646nm ≥20000 at 281-287nm ≥22700 at 251-257nm ≥6400 at 407-413nm |
| Merck | 14,252 |
| Henry’s Law Constant | 3.1×1023 mol/(m3Pa) at 25℃, HSDB (2015) |
| Major Application | diagnostic assay manufacturing hematology histology |
The application of Acid Green 25
The primary use Acid Green 25
Acid Green 25 plays a crucial duty in various fields such as fabric printing and dyeing, biomedicine, and day-to-day durable goods due to its intense green tone, excellent light fastness, and excellent water solubility.
1. Textile and leather sector:
In traditional application areas, Acid Green 25 is widely utilized in dyeing and printing procedures for wool, silk, nylon, and their mixed textiles. Under weakly acidic color bath problems, color particles can securely bind to the amino groups at the fiber finishes through ionic bonds and intermolecular forces, giving the textile a bright and consistent eco-friendly color and exceptional light fastness. Additionally, it is also typically utilized for tinting natural leather items
2. Biomedical and histological areas
In scientific research study and clinical laboratories, Acid Green 25 is an important organic staining representative commonly used for discoloring histological and hematological samples. In analysis testing, it is utilized to discolor blood cells and various other organic samples, assisting scientists and pathologists identify cell frameworks clearly under a microscope. The discoloration system is based on the electrostatic interaction and hydrogen bonding between color particles and healthy proteins and nucleic acids in cells, causing a distinct coloring impact.
3. Cosmetics and individual treatment products
As a chemical element of D&C Eco-friendly No. 5, Acid Green 25 is accepted for tinting cosmetics and drugs. It is commonly utilized in shampoo, cream and other products to add an attractive environment-friendly appearance to the formula. In the field of medication, it is made use of for coloring in various formulations, aiding to differentiate various items and enhance the individual experience for patients.
4. Environmental monitoring and clinical study field
In ecological chemistry research study, Acid Green 25 is often made use of as a “design toxin” to evaluate the efficiency of wastewater treatment innovations. Scientists made use of bio adsorbent products such as chitosan beads to research their decolorization, in order to check out how to successfully remove dye toxins from commercial wastewater. At the same time, it can additionally be utilized as a raw material in the synthesis of crossbreed pigments, for the growth of environmentally friendly and eco-friendly brand-new pigments.
Acid Green 25 '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.
Related References
Manufacturer of Acid Green 25
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 Acid Green 25 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.
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.
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.
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
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.
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