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ChemicalBook >> CAS DataBase List >> Methyl Red

Methyl Red

Methyl Red price.
  • $10 - $1332.8
  • Product name: Methyl Red
  • CAS: 493-52-7
  • MF: C15H15N3O2
  • MW: 269.3
  • EINECS:207-776-1
  • MDL Number:MFCD00002425
  • Synonyms:CI NO 13020;BROMOCRESOL GREEN-METHYL RED;BROMOCRESOL GREEN/METHYL RED, MIXED INDICATOR;2-(4-Dimethylaminophenylazo)benzoic acid, 4-Dimethylaminoazobenzene-2μ-carboxylic acid, Acid Red2;METHYL RED;METHYL RED-BROMOCRESOL GREEN;2-[4-(DIMETHYLAMINO)PHENYLAZO]BENZOIC ACID;4-DIMETHYLAMINOAZOBENZENE-2'-CARBOXYLIC ACID
38 prices
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  • aablocks
  • AK Scientific
  • Alfa Aesar
  • Aronis compounds
  • Chem-Impex
  • Labseeker
  • Sigma-Aldrich
  • TCI Chemical
  • TRC
  • Usbiological
Package
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  • Manufactureraablocks
  • Product numberAA00DDNY
  • Product descriptionMethyl Red sodium salt
  • Packaging25g
  • Price$27
  • Updated2021-12-16
  • Buy
  • Manufactureraablocks
  • Product numberAA00DDNY
  • Product descriptionMethyl Red sodium salt
  • Packaging100g
  • Price$43
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberZ3696
  • Product descriptionMethyl Red
  • Packaging25g
  • Price$10
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberZ3696
  • Product descriptionMethyl Red
  • Packaging100g
  • Price$25
  • Updated2021-12-16
  • Buy
  • ManufacturerAlfa Aesar
  • Product number038698
  • Product descriptionMethyl Red 0.1% w/v solution in ethanol
  • Packaging100ml
  • Price$23.3
  • Updated2023-06-20
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  • ManufacturerAlfa Aesar
  • Product number036682
  • Product descriptionMethyl Red, ACS
  • Packaging25g
  • Price$34
  • Updated2024-03-01
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  • ManufacturerAlfa Aesar
  • Product number038698
  • Product descriptionMethyl Red 0.1% w/v solution in ethanol
  • Packaging500ml
  • Price$40.9
  • Updated2023-06-20
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  • ManufacturerAlfa Aesar
  • Product numberA16690
  • Product descriptionMethyl Red
  • Packaging100g
  • Price$72.2
  • Updated2024-03-01
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  • ManufacturerAlfa Aesar
  • Product number036682
  • Product descriptionMethyl Red, ACS
  • Packaging100g
  • Price$114
  • Updated2024-03-01
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  • ManufacturerAlfa Aesar
  • Product numberA16690
  • Product descriptionMethyl Red
  • Packaging500g
  • Price$269
  • Updated2024-03-01
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  • ManufacturerAronis compounds
  • Product numberc05477
  • Product description2-{[4-(dimethylamino)phenyl]diazenyl}benzoicacid
  • Packaging20mg
  • Price$30
  • Updated2021-12-16
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  • ManufacturerAronis compounds
  • Product numberc05477
  • Product description2-{[4-(dimethylamino)phenyl]diazenyl}benzoicacid
  • Packaging50mg
  • Price$50
  • Updated2021-12-16
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  • ManufacturerChem-Impex
  • Product number30111
  • Product descriptionMethylRedfreeacid,ACSreagent ACSreagent
  • Packaging25G
  • Price$20.72
  • Updated2021-12-16
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  • ManufacturerChem-Impex
  • Product number22782
  • Product descriptionMethylRedfreeacid
  • Packaging100G
  • Price$29.12
  • Updated2021-12-16
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  • ManufacturerChem-Impex
  • Product number30111
  • Product descriptionMethylRedfreeacid,ACSreagent
  • Packaging100G
  • Price$46.59
  • Updated2021-12-16
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  • ManufacturerChem-Impex
  • Product number30111
  • Product descriptionMethylRedfreeacid,ACSreagent
  • Packaging250G
  • Price$93.18
  • Updated2021-12-16
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Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00DDNY Methyl Red sodium salt 25g $27 2021-12-16 Buy
aablocks AA00DDNY Methyl Red sodium salt 100g $43 2021-12-16 Buy
AK Scientific Z3696 Methyl Red 25g $10 2021-12-16 Buy
AK Scientific Z3696 Methyl Red 100g $25 2021-12-16 Buy
Alfa Aesar 038698 Methyl Red 0.1% w/v solution in ethanol 100ml $23.3 2023-06-20 Buy
Alfa Aesar 036682 Methyl Red, ACS 25g $34 2024-03-01 Buy
Alfa Aesar 038698 Methyl Red 0.1% w/v solution in ethanol 500ml $40.9 2023-06-20 Buy
Alfa Aesar A16690 Methyl Red 100g $72.2 2024-03-01 Buy
Alfa Aesar 036682 Methyl Red, ACS 100g $114 2024-03-01 Buy
Alfa Aesar A16690 Methyl Red 500g $269 2024-03-01 Buy
Aronis compounds c05477 2-{[4-(dimethylamino)phenyl]diazenyl}benzoicacid 20mg $30 2021-12-16 Buy
Aronis compounds c05477 2-{[4-(dimethylamino)phenyl]diazenyl}benzoicacid 50mg $50 2021-12-16 Buy
Chem-Impex 30111 MethylRedfreeacid,ACSreagent ACSreagent 25G $20.72 2021-12-16 Buy
Chem-Impex 22782 MethylRedfreeacid 100G $29.12 2021-12-16 Buy
Chem-Impex 30111 MethylRedfreeacid,ACSreagent 100G $46.59 2021-12-16 Buy
Chem-Impex 30111 MethylRedfreeacid,ACSreagent 250G $93.18 2021-12-16 Buy

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
CAS DataBase Reference :493-52-7
IARC :3 (Vol. 8, Sup 7) 1987
NIST Chemistry Reference :Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-(493-52-7)
EPA Substance Registry System :Methyl red (493-52-7)

Safety Information

Symbol(GHS): GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger GHS hazard pictograms P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P403+P235 Store in a well-ventilated place. Keep cool.

Description

pH indicator in pH range 4.2 - 6.3Methyl red is used as a pH indicator. It is red in pH less than 4.4 and yellow in pH over 6.2. It is used to study its degradation using Fenton's reagent. In microbiology, it is used to identify bacteria producing stable acids by mechanisms of mixed acid fermentation of glucose.

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