

| CAS No: | 7220-79-3 |
| Name: | Methylene Blue Trihydrate |
| EINECS: | 615-731-6 |
| Formula: | C16H20ClN3OS |
| Weight: | 337.87 |
| Other Names: | Methylthioninium chloride; Alkaline Lake Blue BB |
| Type: | Dye intermediates; Daily chemicals; Inorganic salts |
| Shelf Life: | 3 years |
| Brand Name: | Look Chem |
| Place of Origin: | Shandong, China |
Methylene blue, also known as alkaline lake blue, methine blue, or methylene blue trihydrate, has a molecular formula of C₁₆H₁₈ClN₃S·3H₂O. It is a green, shiny, columnar crystal or crystalline powder. It is odorless, remains unchanged in air, and is readily soluble in water and alcohol. Its mild properties make it safe to use and can also help improve respiratory function in fish.
Methylene blue is a commonly used treatment for ornamental fish, effectively treating a variety of diseases such as white spot disease, tail rot, and water mold. However, improper use can have adverse effects, such as reducing beneficial bacteria in aquariums or killing aquatic plants. To maximize therapeutic effectiveness, it is essential to strictly follow dosage instructions.
Methylene blue is a powerful antiseptic, capable of killing parasites and protozoa (including fungi and pathogens) on the skin and gills of ornamental fish, thereby curing diseases. It is also very effective in preventing diseases carried by new fish and can be used to disinfect newly purchased fish and supplies.
| Item | Specification |
| Product Name | Methylene Blue Trihydrate |
| CAS No. | 7220-79-3 |
| Appearance | Green powder |
| Shelf Life | 3 years |
| Packing | 1kg/bag,25kg/bag or as your requirements |
Methylene blue has both oxidizing and reducing properties, enabling detoxification and antibacterial activities.
Unlike potassium permanganate and chlorine dioxide, which rapidly kill bacteria, methylene blue is milder and safer to use. It also helps improve respiratory function in fish.
Detoxifying Nitrites
If excessive nitrite levels in the aquarium can lead to fish poisoning due to a weak filtration system or other reasons that cause the nitrification system to fail, a methylene blue bath can be used. Its reducing properties can treat methemoglobinemia and prevent nitrite poisoning.
Methylene blue has a dyeing effect. The water in the fish tank will turn blue and it will last for a long time. It is also easy to combine with the filter material, so do not use this medicine in the original tank.
Methylene blue is widely used as a chemical indicator, dye, biological stain, and pharmaceutical. It is particularly used in the dyeing industry, where it is used in large quantities for the manufacture of inks. Methylene blue is also widely used in the following fields.
As an experienced Methylene Blue Trihydrate manufacturer and supplier, Look Chemical is committed to producing and selling high quality products.
We cooperate and trade with 6000+ factories around the world, and our high-quality products and excellent services make us enjoy a high reputation internationally.
As Methylene Blue Trihydrate supplier, Look Chemical provides supply chain solutions to partners and customers in a wide range of industries. We offer competitive pricing and quality products.
If you have a demand for this product, please contact our company’s sales staff, we will provide you with a solution in the shortest time.
I’m william, CEO of Look Chemical Co., Ltd. Welcome to visit our company. As China’s top Global Supply Specialist of chemicals, we have always been adhering to the principle of “service first, quality first, mutual benefit”, and we insist on Create value for customers and grow together with customers.
In the past few years , we have provided efficient and satisfactory services to more than 6000 customers and have been widely praised internationally. In the future, we will strive to provide more than 100,000 customers with professional and thoughtful services, and strive to become your first choice for worry-free purchasing chemicals in China , Hope to bring you a good cooperation experience. If you have any questions, please feel free to contact us.
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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.
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.
Different quantity has different discount.
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.
Yes. We’ll give you product analysis report before shipping.
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.
1. Certificate Of Analysis (COA)
2. Material Safety Data Sheet (MSDS)
3. Route of synthesis (ROS)
4. Method of Aanlysis (MOA)
5. Nuclear Magnetic Resonance (NMR)
6. Packing pictures and loading video before loading
7. Free Sample
8. Factory audit