Amines & Amides Available to Source

Methylene Blue USP

CAS 61-73-4 · MF C16H18ClN3S · MW 319.9 g/mol

Pharmaceutical-grade dye used as indicator and biological stain.

SDS / TDS Download
CAS Number
61-73-4
Molecular Formula
C16H18ClN3S
Molecular Weight
319.9 g/mol
Material Family
Amines & Amides
Industries Served
Physical Properties
melting_point
100 to 110 u00b0C (with decomposition)
solubility
In water, 43,600 mg/L at 25 u00b0C.
vapor_pressure
0.00000013 [mmHg]
GHS / SDS Safety Danger
Irritant Health Hazard Corrosive
  • H318 (100%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H318 (25.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
  • H412 (10.3%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
  • H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
  • H302: Harmful if swallowed [Warning Acute toxicity, oral]
  • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
  • H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H302 (91.6%): Harmful if swallowed [Warning Acute toxicity, oral]
Chemical Identity
CAS Number61-73-4
IUPAC Name[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride
InChI KeyCXKWCBBOMKCUKX-UHFFFAOYSA-M
PubChem CID 6099
INCI NameBASIC BLUE 9
Synonyms & Trade Names
methylene blue Basic blue 9 Methylthioninium chloride Solvent blue 8 Swiss Blue Methylene Blue anhydrous Chromosmon C.I. Basic Blue 9 Methylene Blue N Methylthionine chloride Methylene Blue BB Methylene Blue chloride Methylenium ceruleum Urolene blue Bleu de methylene
Full Description

Pharmaceutical-grade dye used as indicator and biological stain.