Methyl Red manufacturers and suppliers

Methyl Red suppliers

Properties

Melting point:: 179-182 °C (lit.)

Boiling point:: 412.44°C (rough estimate)

Density: 0.839 g/mL at 25 °C

vapor density: 9.3 (vs air)

refractive index: 1.5930 (estimate)

Flash point:: 11 °C

storage temp.: Store at +5°C to +30°C.

solubility: ethanol: soluble1mg/mL

Colour Index: 13020

form: Solid

pka: 4.95(at 25℃)

color: Reddish-violet

Odor: Odorless

PH Range: 4.4(red)-6.3(yellow)

Water Solubility: Practically insoluble in water. Soluble in alcohol, acetic acidSoluble in ethanol. Insoluble in water.

λmax: 410nm, 530nm, 427nm, 519nm

Merck: 14,6119

BRN: 750102

Stability:: Stable. Incompatible with strong oxidizing agents.

Major Application: Waveguides, LED sensors, photoresists, liquid crystals, sol-gel matrix, optical sensors, paints, toys, detection of thiols, food freshness sensors, dental product, saliva sampling method, detecting lactic acid, carbohydrates

InChIKey: CEQFOVLGLXCDCX-MSUUIHNZSA-N

Safety Information

Symbol(GHS): GHS02,GHS07,GHS08

Signal word: Danger

Hazard statements: H225-H319-H371

Precautionary statements: P210-P260-P280-P308+P311-P337+P313-P403+P235

Hazard Codes: Xn,T,F,Xi,C,N

Risk Statements: 10-20/21/22-68/20/21/22-68-36/38-23/25-11-36/37/38-34-51/53-39/23/24/25-23/24/25

Safety Statements: 36/37-24/25-22-45-33-24-16-7-36-26-36/37/39-61

RIDADR: UN 1170 3/PG 2

WGK Germany: 1

RTECS: DG8960000

TSCA: Yes

HazardClass: 3

PackingGroup: II

HS Code: 29270000

Use

Methyl red is a commonly used indicator for acid-base titrations. This chemical is usually yellow but turns red below pH 4.0. Bacteria exhibiting mixed acids fermentation will accumulate acids in the medium, resulting in a color change. Approximately five drops of methyl red reagent are added to an overnight culture grown in MRVP broth to determine the test result. Different bacteria convert dextrose and glucose to pyruvate using different metabolic pathways. Some of these pathways produce unstable acidic products which quickly convert to neutral compounds. Some organisms use the butylene glycol pathway, which produces neutral end products, including acetoin and 2,3-butanediol. Other organisms use the mixed acid pathway, which produces acidic end products such as lactic, acetic, and formic acid. These acidic end products are stable and will remain acidic. The Methyl Red test involves adding the pH indicator methyl red to an inoculated tube of MR-VP broth. If the organism uses the mixed acid fermentation pathway and produces stable acidic end-products, the acids will overcome the buffers in the medium and produce an acidic environment in the medium. When methyl red is added, if acidic end products are present, the methyl red will stay red.

You can find Methyl Red suppliers, manufacturers, and distributors from countries such as CHINA, India and the United States here. Browse to the tetrahydrofuran product information displayed by the supplier, as well as the supplier's contact and capability information.