Factory Supply High Purity Indicator Methyl Red with Enough Stock CAS 493-52-7

• CAS No.: 493-52-7
• Formula: C15h15n3o2
• EINECS: 207-776-1
• Classification: Biochemical Reagents
• Grade: Ind
• Specific Usage: For Biological Purpose, Technical Grade, Pro Analysis
• Model NO.: IND
• Content: Standard
• Usage: Laboratory Reagents, Analytical Reagents
• Source: Concrete
• Application: Scientific Research
• Property: Organic Reagent
• Appearance: Reddish-Violet
• Density: 0.791 g/cm3
• Melting Point: 179 Degree
• Solubility: Soluble in Ethanol
• Transport Package: 25 Kgs Fiber Drums
• Specification: IND
• Trademark: Sinochembt
• Origin: Shenyang
• HS Code: 2927000000
• Production Capacity: 500kgs Per Month

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:

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 pK_a 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 pK_a), right: alkaline