Methyl Red

Melting point :179-182 °C (lit.)
Boiling point :412.44°C (rough estimate)
Density :0.839 g/mL at 25 °C
bulk density :300-500kg/m3
vapor density :9.3 (vs air)
refractive index :1.5930 (estimate)
Flash point :11 °C
storage temp. :Store at +5°C to +30°C.
solubility :ethanol: soluble1mg/mL
Colour Index :13020
form :Solid
pka :4.95(at 25℃)
color :Reddish-violet
Odor :Odorless
PH Range :4.4(red)-6.3(yellow)
Water Solubility :Practically insoluble in water. Soluble in alcohol, acetic acidSoluble in ethanol. Insoluble in water.
ε(extinction coefficient) :≥10000 at 282-288nm in methanol
≥20000 at 509-519nm in methanol
≥7000 at 329-335nm in methanol λmax :410nm, 530nm, 427nm, 519nm
Merck :14,6119
BRN :750102
Stability :Stable. Incompatible with strong oxidizing agents.
Major Application :Waveguides, LED sensors, photoresists, liquid crystals, sol-gel matrix, optical sensors, paints, toys, detection of thiols, food freshness sensors, dental product, saliva sampling method, detecting lactic acid, carbohydrates
InChI :1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)
InChIKey :CEQFOVLGLXCDCX-MSUUIHNZSA-N
SMILES :N(C)(C)c1ccc(cc1)N=Nc2c(cccc2)C(=O)O
CAS DataBase Reference :493-52-7
IARC :3 (Vol. 8, Sup 7) 1987
NIST Chemistry Reference :Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-(493-52-7)
EPA Substance Registry System :Methyl red (493-52-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P337+P313 IF eye irritation persists: Get medical advice/attention. P403+P235 Store in a well-ventilated place. Keep cool.