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Home > Pharmaceutical Intermediates > Bulk Drug Intermediates > Methylene blue trihydrate for Sale > High Quality Methylene Blue trihydrate Cas 7220-79-3 99% Powder
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High Quality Methylene Blue trihydrate Cas 7220-79-3 99% Powder

TDS 4 Inquiries

Unit Price: Get Latest Price
CAS No.:

7220-79-3

Grade:

Pharmaceutical Grade

Content:

99%

Port:

shanghai

Brand:

HNB

Packaging:

25kg Cardboard Drum

Price valid (until):

2026-04-18

Company Type:
Manufactory
Location:
China
Qualification:
Main Products:

Ivermectin,Active pharmaceutical ingredients,Cosmetics material,Chemical intermediate,Nootropic,Food additive

  • Product Description

  • Seller Information

  • Inquiry History

  • Description


      Product Description  


    1. Basic information

    Chemical name: Methylene blue, also known as methylene blue, tetramethyl blue, etc

    English name: Methylene Blue

    Molecular formula: C 16 H 18 ClN 3 S·3H 2 O

    Molecular weight: 373.9 g/mol (anhydrous)

    EC number: 200-515-2

    2. Physical and chemical properties

    Appearance: Bright dark green crystals or small dark brown powder, with bronze luster, odorless, stable in air.

    Melting point: 180 ° C (decomposition)

    PH value: 3 (10g/L, H2O, 20 ° C)

    Spectral characteristics: maximum absorption wavelength 668, 609nm

    3. Purpose

    a. Biological field

    Bacterial staining agent: It can stain bacterial cells and facilitate the observation of bacterial morphology, structure, and arrangement under a microscope. It is commonly used in bacteriological experiments such as Gram staining.

    Cell staining: Prepare staining solution for exfoliated cells to stain exfoliated cells and assist in pathological diagnosis. Alkaline methylene blue staining solution can also be prepared for staining microbial cells and tissue sections.

    b. In the field of chemical analysis

    Redox indicator: In redox titration, the endpoint of the titration is indicated by a change in color.

    Measurement of metal ions: used to determine the content of metal ions such as mercury and tin.

    Precipitant: used as a reducing titrant to precipitate perchlorates and rhenium salts.

    c. Medical field

    Treatment of methemoglobinemia: Reduce methemoglobin to normal hemoglobin and restore its oxygen carrying function.

    Treatment of cyanide poisoning: When used in combination with sodium thiosulfate, cyanide ions can be converted into relatively non-toxic thiocyanate and excreted from the body.

    Other: Methylene blue also has anti malaria, anti depression, and anti anxiety effects, and can be used for research and treatment of related diseases.

    d. Other fields

    Aquaculture: used to control diseases such as water mold and small melon worms, with minimal damage to fish.

    In the industrial sector, it is used for dyeing cotton, acrylic fiber, linen, silk, paper, as well as for coloring bamboo and wood, and for manufacturing ink and color lakes.

     

    Items Specifications
    Name Methylene Blue trihydrate
    CAS  7220-79-3
    Molecular formula C16H20ClN3OS
    Density 337.87


      About Us


    Xian Harmonious Natural Bio- Technology Co., Ltd was founded in 2017, and located in Xian International Logistics Industrial Zone, Xian City. Shaanxi Province, China. Now it is the leading researcher and one of the biggest manufacturer in high technology APl area.

    There are 8 experts in our research team. We insistin innovation and produce high quality products. And GMP standard workshop and complete stainless extraction equipment.

    We have 2 sales deparments over 20 people and sell our products allover the word. We also have strong professional research and development team talented personnel and completely equipped laboratoy for the quality controlling. Various Detection Device is equipped in HNB company, such as HPLCGC, Spectrophotometer, AAS, Polarimeter, Auto titrators, BOD Incubators, COD Incubators, Melting point apparatus and so on.
    HNB mainly engaged in export of products incuding,without limitation., pharmaceutical raw materials both for vet and human, also Vitamins, Amino Acids minerals, peptides, plant extract, feed and food additives. Our company's business is based on Honest, Trustwortly, Constanty to Go Beyond and Achieve Mutual Win. Sincerely hope to strengthen exchanges and cooperation with friends from both home and abroad.
    Passion to innovate, Power to deliver !

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      FAQ 


    Q1 Can i get some samples?

    A1 Yes, we can supply the free sample, but the shipping cost be paid by our customers.

    Q2 How to start orders or make payments?

    A2 Proforma invoice will be sent first after confirmation of order, enclosed our bank information.

    Payment by T/T,or Paypal or Escrow(Alibaba).

    Q3 How to confirm the Product Quality before placing orders?

    A3 You can get free samples for some products,you only need to pay the shipping cost or arrange a courier

    to us and take the samples. You can send us your product specifications and requests,we will manufacture

    the products according to your requests.

    Q4 What’s your MOQ?

    A4 Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge

    is 100% paid.

    Q5 How about delivery leadtime?

    A5 Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)

    Q6 Is there a discount?

    A6 Different quantity has different discount.

    Q7 How do you treat quality complaint?

    A7 First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem

    caused by us, we will send you free goods for replacement or refund your loss.

    Q8 How to contact us ?

    A8 You can choose your interested products and send inquiry to us.

    Certificates

    Basic Info
    Product Name:

    Methylene blue trihydrate

    Other Name:

    Phenothiazin-5-ium,3,7-bis(dimethylamino)-,chloride,hydrate (1:1:3);C.I. Basic Blue 9,trihydrate;Phenothiazin-5-ium,3,7-bis(dimethylamino)-,chloride,trihydrate;3,7-Bis(dimethylamino)phenazathionium chloride trihydrate;Methylene blue trihydrate

    CAS No.:

    7220-79-3

    Molecular Formula:

    C16H18N3S.Cl.3H2O

    InChIKeys:

    InChIKey=XQAXGZLFSSPBMK-UHFFFAOYSA-M

    Molecular Weight:

    373.89800

    Exact Mass:

    373.12300

    EC Number:

    615-731-6

    UNII:

    T42P99266K

    DSSTox ID:

    DTXSID0025600

    NCI Thesaurus Code:

    C644

    HScode:

    32129000

    Characteristics
    PSA:

    75.07000

    XLogP3:

    -0.69000

    Appearance:

    Methylene blue trihydrate appears as odorless or almost odorless dark green crystals with bronze luster or dark green crystalline powder. pH (1% solution in water) 3 to 4.5 . (NTP, 1992)

    Density:

    0.98 g/mL at 25 °C

    Melting Point:

    190ºC

    Flash Point:

    14ºC

    Water Solubility:

    H2O: 4 g/100 mL

    Storage Conditions:

    Store at RT.

    Vapor Pressure:

    1.30X10-7 mm Hg at 25 deg C (est)

    Air and Water Reactions:

    Hygroscopic. Water soluble. Gives a blue solution in water.

    Reactive Group:

    Amines, Phosphines, and Pyridines

    Reactivity Profile:

    METHYLENE BLUE TRIHYDRATE is incompatible with strong oxidizing agents, caustics, alkali metal iodides and reducing agents. Also incompatible with dichromates. It forms double salts with many inorganic salts. Is bleached reversibly by (zinc + hydrochloric acid) or sodium hydrosulfite. In aqueous solution, this chemical is decolorized by zinc dust and dilute sulfuric acid, but the color is restored upon exposure to air and more rapidly upon addition of ammonium hydroxide. (NTP, 1992)

    Hazard Identification

    Classification of the substance or mixture

    Acute toxicity - Category 4, Oral

    Skin irritation, Category 2

    Eye irritation, Category 2

    Specific target organ toxicity – single exposure, Category 3

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Warning

    Hazard statement(s)

    H302 Harmful if swallowed

    H315 Causes skin irritation

    H319 Causes serious eye irritation

    H335 May cause respiratory irritation

    Precautionary statement(s)
    Prevention

    P264 Wash ... thoroughly after handling.

    P270 Do not eat, drink or smoke when using this product.

    P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

    P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

    P271 Use only outdoors or in a well-ventilated area.

    Response

    P301+P317 IF SWALLOWED: Get medical help.

    P330 Rinse mouth.

    P302+P352 IF ON SKIN: Wash with plenty of water/...

    P321 Specific treatment (see ... on this label).

    P332+P317 If skin irritation occurs: Get medical help.

    P362+P364 Take off contaminated clothing and wash it before reuse.

    P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

    P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

    P319 Get medical help if you feel unwell.

    Storage

    P403+P233 Store in a well-ventilated place. Keep container tightly closed.

    P405 Store locked up.

    Disposal

    P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

  • Seller Information
    Business Type:

    Manufactory

    Main Products:

    Ivermectin,Active pharmaceutical ingredients,Cosmetics material,Chemical intermediate,Nootropic,Food additive

    Location:

    6 floor Baoyilongji Building B Weiyang Area, Fengcheng 8 Road, Xi'an city, Shaanxi, 710000, China

    Payment Terms:

    L/C,TT against B/L draft before shipment,100% TT in advance

    Average lead Time:

    7

    Total Annual Revenue:

    $5 million-$10 million

    Total Employees:

    51-100

    Year of Establishment:

    2017

    Certifications:

    ISO,ISO

    Xi'an Harmonious Natural Bio-Technology Co., Ltd. was founded in 2010, and located in Xian

    International Logistics Industrial Zone, Xi'an City, Shaanxi Province, China. Now it is the

    leading researcher and one of the biggest manufacturer in high technology API area. 

     

    There are 8 experts in our research team. We insist in innovation and produce high quality

    products. And GMP standard workshop and complete stainless extraction equipment. 

    We have 2 sales departments over 20 people and sell our products all over the world.

     

    We also have strong professional research and development team, talented personnel and

    completely equipped laboratory for the quality controlling. Various Detection Device is

    equipped in HNB company, such as HPLC, GC, Spectrophotometer, AAS, Polarimeter, Auto

    titrators, BOD Incubators, COD Incubators, Melting point apparatus and so on.

     

    HNB mainly engaged in export of products including, without limitation, pharmaceutical raw

    materials both for vet and human, also Vitamins, Amino Acids, minerals, peptides, plant

    extract, feed and food additives.

     

    Our company's business is based on Honest, Trustworthy, Constantly to Go Beyond and

    Achieve Mutual Win. Sincerely hope to strengthen exchanges and cooperation with friends

    from both home and abroad.

     

    Passion to innovate, Power to deliver !

  • Inquiry History
    4 Inquiries
    Country Product Purchase Quantity Date Posted
    India

    Methylene blue

    100 KG Aug 26, 2024
    India

    Methylene blue trihydrate

    100 KG May 19, 2026
    Pakistan

    redox indicator

    1 KG Aug 19, 2025
    United Kingdom

    Methylene blue raw powder

    1 MT Sep 25, 2025
    Post an enquiry for this product
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