A5359312
Methyl Red sodium salt , IND , 845-10-3
Synonym(s):
2-[(4-Dimethylamino)phenylazo]benzoic acid sodium salt, 4-(Dimethylamino)azobenzene-1,2′-carboxylic acidsodium salt;4-Dimethylaminoazobenzene-2′-carboxylic acid sodium salt;Acid Red 2;Methyl red sodium salt (C.I. 13020)
CAS NO.：845-10-3
Empirical Formula: C15H16N3NaO2
Molecular Weight: 293.3
MDL number: MFCD00002425
EINECS: 212-682-9
| Pack Size | Price | Stock | Quantity |
| 5g | RMB25.60 | In Stock |
|
| 25G | RMB76.80 | In Stock |
|
| 100G | RMB188.00 | In Stock |
|
| 500G | RMB767.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 178-182 °C |
| Boiling point: | 64.7 °C |
| Density | 0.791 |
| Flash point: | 12 °C |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: soluble |
| Colour Index | 13020 |
| pka | 2.3, 5.0(at 25℃) |
| form | Solid |
| color | White to yellow or beige, darkening on exposure to light |
| Odor | Odorless |
| PH Range | Red (1.2) to orange (3.4);Red (4.2) to yellow (6.3) |
| PH | 8.2 (10g/l, H2O, 25℃) |
| Water Solubility | Soluble in water. Slightly soluble in ethanol. |
| λmax | 437nm, 410nm, 493nm |
| BRN | 4065488 |
| Stability: | Reported to be unstable, but this is probably a mistake on a commercial MSDS sheet. Incompatible with strong oxidizing agents. |
| Major Application | optical fibers, liquid crystal cells, holography, inks, toner, corrosion inhibitor, detergent |
| CAS DataBase Reference | 845-10-3(CAS DataBase Reference) |
| EPA Substance Registry System | Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-, sodium salt (845-10-3) |
Description and Uses
Methyl Red sodium salt is used as a pH indicator. In microbiology, it is used to make agar plates in bacteriology. Further, it is used as a coloring agent and also finds use in mouthwash, toothpaste and in cosmetics. It is also employed as a rocket propellant. In addition to this, it is used in the preparation of reversible stain for rapid detection of stained cells in each specimen.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H319-H302-H332-H335-H315-H312 |
| Precautionary statements | P264-P270-P301+P312-P330-P501-P261-P271-P304+P340-P312-P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362-P280-P302+P352-P312-P322-P363-P501 |
| Hazard Codes | Xn,C,F |
| Risk Statements | 40-34-11 |
| Safety Statements | 36/37-24/25-45-36/37/39-26-16 |
| RIDADR | UN 1170 3/PG 2 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29270000 |
