Audited Supplier
IND
493-52-7
C15h15n3o2
207-776-1
Biochemical Reagents
Ind
For Biological Purpose, Technical Grade, Pro Analysis
Standard
Laboratory Reagents, Analytical Reagents
Concrete
Scientific Research
Organic Reagent
Reddish-Violet
0.791 g/cm3
179 Degree
Soluble in Ethanol
Sinochembt
25 Kgs Fiber Drums
IND
Shenyang
2927000000
Product Description
We are Manufacturer and always supplying Methyl red 493-52-7 with competitive price,high quality and regular basis.
Name of Product: Methyl red
Molecular Formula: C15H15O2N3
Relative Molecular Mass: 269.30(1995)
Appearance: Red-brown powder.
CAS NO.:493-52-7
Package: 25KGS plastic drums
Test results:
Name of Product: Methyl red
Molecular Formula: C15H15O2N3
Relative Molecular Mass: 269.30(1995)
Appearance: Red-brown powder.
CAS NO.:493-52-7
Package: 25KGS plastic drums
Test results:
| Items: | Requirements: | Test results: | |
| Maximalabsorption wavelength λ1(pH4.5),nm λ1(pH6.2),nm | 523~528 427~437 | N/A | N/A |
| Quality absorption coefficient λ1(pH4.5),L/(cm·g) ≥ λ2(pH1.2),L/(cm·g) ≥ | 130 70 | 45 67 | Unqualified |
| pH range of change | 4.5(red)~6.2(yellow) | 4.5(red)~6.2(yellow) | Qualified |
| Solubility in alcohol | Qualified | few impurities in the solution | Unqualified |
| Sulfated ash % ≤ | 0.2% | 3.46% | Unqualified |
| Loss on drying % ≤ | 1.0% | 1.69% | Unqualified |
Methyl red (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder. Methyl red is a pH indicator; it is red in pH under 4.4, yellow in pH over 6.2, and orange in between, with a pKa of 5.1.Murexide and methyl red are investigated as promising enhancers of sonochemical destruction of chlorinated hydrocarbon pollutants. Methyl red is classed by the IARC in group 3 - unclassified as to carcinogenic potential in humans.Color transition of methyl red solution under different acid-base conditions. Left: acidic, middle: about pH 5.1 (the pKa), right: alkaline
