Methyl red, Hi-Cert™/ACS

SKU:
GRM121
CAS Number : 493-52-7
Molecular Formula : C₁₅H₁₅N₃O₂
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Methyl red 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.
CAS Number : 493-52-7
Molecular Formula : C₁₅H₁₅N₃O₂


Product Identifier

CAS No. 493-52-7
EC No. 207-776-1
C.I. No. 13020
Molecular Formula C15H15N3O2
Molecular Weight 269.30
HS Code 2927 00 90
Storage Below 30°C
Shelf life 4 years

Technical Specification

Appearance Red to brown crystals or powder or solid
Solubility 20 ppm in methanol yields clear solution
Visual pH Transition pH 4.20 (pink)- pH 6.20 (yellow)
Clarity of alcohol solution Passes test
Absorption maxima 427 - 437 nm (20 ppm in pH 6.20 buffer)
Loss on drying (at 110°C, 1 hr) <= 5.00%

Safety Information

UN No. Not dangerous goods
Class -
Packing Group -
RTECS DG8960000
WGK 3
CAS Number : 493-52-7
Molecular Formula : C₁₅H₁₅N₃O₂
More Information
Product Name Methyl red, Hi-Cert™/ACS
SKU GRM121
CAS No 493-52-7
EC No. 207-776-1
Molecular formula C₁₅H₁₅N₃O₂
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