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Name Methyl Red sodium salt
EINECS212-682-9
CAS No. 845-10-3
Density0.791
PSA68.09000
LogP2.53150
Solubilitysoluble in water
Melting Point178-182 °C
FormulaC₁₅H₁₄N₃NaO₂
Boiling Point64.7 °C
Molecular Weight291.285
Flash Point12 °C
Transport InformationUN 1170 3/PG 2
Appearanceorange powder
Safety36/37-24/25-45-36/37/39-26-16
Risk Codes40-34-11
Molecular Structure
Hazard SymbolsXn,C,F
SynonymsXn,C,F

Methyl Red sodium salt Chemical Properties

IUPAC Name: Sodium 2-(4-dimethylaminophenyl)diazenylbenzoate
Molecular Formula: C₁₅H₁₄N₃NaO₂
Molecular Weight: 291.28g/mol
EINECS: 212-682-9
Melting Point: 178-182 °C
storage temp.: Store at RT.
solubility: H₂O: soluble
Stability: Stability Reported to be unstable, but this is probably a mistake on a commercial MSDS sheet. Incompatible with strong oxidizing agents.
Freely Rotating Bonds: 4
Polar Surface Area: 54.26 Å²
Index of Refraction: 1.592
Molar Refractivity: 77.97 cm³
Molar Volume: 230.1 cm³
Polarizability: 30.91 ×10^-24cm³
Surface Tension: 44.3 dyne/cm
Density: 1.17 g/cm³
Flash Point: 243.8 °C
Enthalpy of Vaporization: 78.36 kJ/mol
Boiling Point: 479.5 °C at 760 mmHg
Vapour Pressure: 5.27E-10 mmHg at 25 °C
Product categories: Organics ; Analytical chemistry ; Indicator (PH) ; PH indicators .
The molecular structure of Acid red (CAS No.845-10-3) is.

Methyl Red sodium salt Uses

Acid red (CAS NO.845-10-3) is used as a coloring agent used in mouthwash, toothpaste, cosmetics, where can also be used as rocket propellant, or used in the preparation of reversible stain for rapid detection of stained cells in each specimen.

Methyl Red sodium salt Toxicity Data With Reference

1.	mma-sat 1 mg/plate	AMONDS Applied Methods in Oncology. 3 (1980),253.
2.	cyt-ham:lng 10 g/L	AMONDS Applied Methods in Oncology. 3 (1980),253.
3.	cyt-ham:fbr 12 g/L	ESKHA5 Eisei Shikenjo Hokoku. Bulletin of the National Hygiene Sciences. 96 (1978),55.

Methyl Red sodium salt Consensus Reports

EPA Genetic Toxicology Program.

Methyl Red sodium salt Safety Profile

Mutation data reported. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes: Harmful Xn Corrosive C F
Risk Statements: 40-34-11
R40:Limited evidence of a carcinogenic effect.
R34:Causes burns.
R11:Highly flammable.
Safety Statements: 36/37-24/25-45-36/37/39-26-16
S36/37:Wear suitable protective clothing and gloves.
S24/25:Avoid contact with skin and eyes.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S16:Keep away from sources of ignition.
RIDADR: UN 1170 3/PG 2
WGK Germany: 3
HazardClass: 3
PackingGroup: II
HS Code: 29270000

Methyl Red sodium salt Specification

Acid red (CAS NO.845-10-3), its Synonyms are S No 250 ; MR ; P-Dimethylaminoazobenzene-o-carboxylic acid ; O-(P-dimethylaminophenylazo)benzoic acid ; O-[[P-(dimethylamino)phenyl]azo]benzoic acid, sodium salt ; 2-[[4-(Dimethylamino)phenyl]azo]-benzoicacisodiumsalt ; Benzoicacid,2-[[4-(dimethylamino)phenyl]azo]-,sodiumsalt ; Sodiummethylred . It is an orange powder.

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