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Name Methylene Blue trihydrate
CAS 7220-79-3
EINECS(EC#) 200-515-2
Molecular Formula C16H24ClN3O3S
MDL Number MFCD00150008
Molecular Weight 373.9
MOL File 7220-79-3.mol

Chemical Properties

Appearance Dark green crystalline powder
Melting point  190 °C (dec.)(lit.)
density  0.98 g/mL at 25 °C
Fp  14 °C
storage temp.  Store at RT.
solubility  Soluble in water, chloroform; sparingly soluble in ethanol
Colour Index  52015
form  Solid
pka 2.6, 11.2(at 25℃)
color  Green
Stability: Stable. Incompatible with bases, reducing agents, strong oxidizing agents.
Water Solubility  4 g/100 mL
λmax 668 nm, 609 nm
Merck  13,6085
Biological Applications Diagnosis of tauopathy,Alzheimer’s disease (AD),Pick’s disease; treating prophylaxis; dental materials
CAS DataBase Reference 7220-79-3(CAS DataBase Reference)
IARC 3 (Vol. 108) 2016
EPA Substance Registry System 7220-79-3(EPA Substance)

Safety Data

Hazard Codes  Xn,F
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R11:Highly Flammable.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S24/25:Avoid contact with skin and eyes .
S16:Keep away from sources of ignition-No smoking .
S7:Keep container tightly closed .
RIDADR  UN 1170 3/PG 2
WGK Germany  3
RTECS  SP5740000
HS Code  32129000

Hazard Information

Material Safety Data Sheet(MSDS)

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