Hot sale factory direct price Cosmetic Grade Methylene Blue Trihydrate
4 Inquiries
7220-79-3
99%
sz
JF
25kg/Cardboard Drum
2025-11-30
Weight Loss Peptide,Reta,Tirz,Sema,5 Amino 1mq,Cosmetic raw material,API,SLU-PP-332
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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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
Categories:
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 IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
Skin irritation, Category 2
Eye irritation, Category 2
Specific target organ toxicity â 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 StoragePrecautions 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.
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Seller Information
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Business Type:
Trader
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Main Products:
Weight Loss Peptide,Reta,Tirz,Sema,5 Amino 1mq,Cosmetic raw material,API,SLU-PP-332
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Location:
Unit D01,3/F., Wong King Industrial Building,No.2 Tai Yau Street, Kowloon
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Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
7
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Total Annual Revenue:
$50 million-$100 million
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Total Employees:
51-100
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Year of Establishment:
2012
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Inquiry History4 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
