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Methylene blue

5 Inquiries

Unit Price:

$28/KG EXW

Get Latest Price
CAS No.:

7220-79-3

Grade:

Pharma Grade

Content:

99%

Brand:

DAHAI BIOCHEM

Packaging:

25kg/Cardboard Drum

Sample Available:

Yes

Price valid (until):

2026-12-31

Company Type:
Trader
Location:
China
Payment Terms:
TT against copy of documents,TT against B/L draft before shipment,100% TT in advance
Qualification:
Main Products:

HARD FAT

  • Product Description

  • Seller Information

  • Inquiry History

  • Description


      Product Detail  


    "[Product Overview & Applications]
    Methylene blue (CAS NO.: 7220-79-3) is supplied under stringent quality supervision by DAHAI BIOCHEM. It is a high-grade chemical intermediate widely utilized in fine chemical manufacturing, organic synthesis research, and active pharmaceutical ingredient (API) development. The product features exceptional chemical purity, reliable batch-to-batch consistency, low residual impurities, and high reaction stability, ensuring maximum efficiency and reliability in customer manufacturing processes.

    [Technical Specifications & Parameters]
    - Product Name: Methylene blue
    - CAS Registry Number: 7220-79-3
    - Classification: Pharmaceutical Intermediates & Fine Chemicals
    - Assay / Purity: >= 99.0%
    - Physical Form / Appearance: White Powder
    - Quality Grade: Pharma Grade
    - Manufacturer / Brand: DAHAI BIOCHEM
    - Standard Export Package: 25kg/Cardboard Drum
    - Minimum Order Quantity (MOQ): 1 KG

    [Quality Standards & Storage Conditions]
    1. Quality Standards: Conforms strictly to enterprise and international industrial quality standards. Every production lot undergoes rigorous analytical testing including HPLC, GC, or titration analysis with full batch documentation provided.
    2. Storage & Handling: Store in tightly sealed original containers in a cool, dry, and well-ventilated warehouse. Keep strictly away from direct sunlight, open flames, high temperatures, moisture, and incompatible substances.
    3. Export Logistics & Packaging: Supplied in robust standard export packaging to guarantee integrity during global maritime and air freight. Flexible OEM and customized commercial packaging are available upon inquiry."

    ECHEMI Editorial Reference
    Methylene blue trihydrate (C.I. Basic Blue 9 trihydrate) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue trihydrate is a vasopressor and is often used as a dye in several medical procedures. Methylene blue trihydrate has antinociception, antimalarial, antidepressant and anxiolytic activity effects. Methylene Blue trihydrate has the potential for methemoglobinemias, neurodegenerative disorders and ifosfamide-induced encephalopathytr
    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)
    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)|Methylene Blue is a synthetic basic dye. Methylene blue stains to negatively charged cell components like nucleic acids; when administered in the lymphatic bed of a tumor during oncologic surgery, methylene blue may stain lymph nodes draining from the tumor, thereby aiding in the visual localization of tumor sentinel lymph nodes. When administered intravenously in low doses, this agent may convert methemoglobin to hemoglobin.|A compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. Solutions in water or alcohol have a deep blue color. Methylene blue is used as a bacteriologic stain and as an indicator. It inhibits GUANYLATE CYCLASE, and has been used to treat cyanide poisoning and to lower levels of METHEMOGLOBIN.

    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:

    Trader

    Main Products:

    HARD FAT

    Location:

    BUILDING 4,NO.571, STR.19,BAIYANG DISTRICT, HANGZHOU,CHINA

    Payment Terms:

    TT against copy of documents,TT against B/L draft before shipment,100% TT in advance

    Total Annual Revenue:

    Less than $1 million

    Total Employees:

    5-10

    Year of Establishment:

    2025


      Company Profile  


    Hangzhou Dahai Biopharmaceutical Co., Ltd. is located in the Xiasha Economic Development Zone of Hangzhou, the capital city of Zhejiang Province on the southeastern coast of China. It is a modern private enterprise specializing in the development and sales of high-tech products such as pharmaceutical raw materials, pharmaceutical intermediates, fine chemicals, and biochemical reagents.

    Since its establishment, the company has adhered to the development path of "technological innovation" and places great emphasis on research and development in technological innovation. The company's high-quality products are popular in over sixty countries and regions, including North America, Western Europe, Southeast Asia, and Central and South America.

    Currently, the company has established long-term and stable cooperative relationships with pharmaceutical enterprises in multiple countries, including Europe, the United States, Greece, Germany, Iran, Russia, South Korea, and India. Through our rigorous approach and sincere service, we have earned the trust and high regard of our clients.

  • Inquiry History
    5 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 States

    Methylene Blue Trihydrate (Methylthioninium Chloride), Pharmaceutical Grade

    15 KG Jul 11, 2026
    United Kingdom

    Methylene blue raw powder

    1 MT Sep 25, 2025
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