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Methyl red ,CAS493-52-7

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CAS No.:

493-52-7

Port:

Shang hai

Packaging:

25kg/drum

Price valid (until):

2025-08-28

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PROVCHEM

Company Type:

Manufactory

Location:

China

Qualification:

Main Products:

Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate

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Product Description
Seller Information
Inquiry History

Description

Product Detail

dark red crystalline powder

Methyl red is an azo dye consisting of benzoic acid substituted at position 2 by a 4-[(dimethylamino)phenyl]diazenyl group. It has a role as a dye. It is a member of azobenzenes, a monocarboxylic acid and a tertiary amino compound. It is a conjugate acid of a methyl red(1-).

Items	Specifications
Appearance	Reddish-violet Solid
Melting Point	181-182℃
Water Solubility	Practically insoluble in water.soluble in alcohol, acetic acidsoluble in ethanol. Insoluble in water.ethanol: soluble 1mg/mL

Methyl red Use and Manufacturing
Methods of Manufacturing
After diazotization of anthranilic acid, it is obtained by reaction with N, N-dimethylaniline.
Uses
As indicator in 0.1% alcoholic solution; pH:4.4 red, 6.2 yellow.Used for titrating NH3, weak organic bases, e.g., alkaloids; not suitable for organic acids, except oxalic and picric acid.Methyl red is easily reduced, thereby losing its color, and readings should be made promptly.It is gradually being replaced by sulfonphthalein indicators, such as bromcresol green, which are more stable and exhibit a sharper change in color.

Basic Info

Product Name:

Methyl red

Other Name:

Benzoic acid,2-[2-[4-(dimethylamino)phenyl]diazenyl]-;C.I. Acid Red 2;Benzoic acid,2-[[4-(dimethylamino)phenyl]azo]-;2-[2-[4-(Dimethylamino)phenyl]diazenyl]benzoic acid;p-(Dimethylamino)azobenzene-o-carboxylic acid;Methyl red;2-Carboxy-4′-(dimethylamino)azobenzene;o-[[p-(Dimethylamino)phenyl]azo]benzoic acid;o-Methyl red;4′-(Dimethylamino)azobenzene-2-carboxylic acid;2-[(p-Dimethylamino)phenyl]azobenzoic acid;C.I. 13020;Acid Red 2;4-(2-Carboxyphenylazo)-N,N-dimethylaniline;Methyl red C.I. 13020;2-[[4-(Dimethylamino)phenyl]azo]benzoic acid;NSC 215212;NSC 34729;NSC 9597;4-(Dimethylamino)azobenzene-2′-carboxylic acid;2-(N,N-Dimethyl-4-aminophenyl)azobenzenecarboxylic acid;2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic acid

CAS No.:

493-52-7

Molecular Formula:

C15H15N3O2

InChIKeys:

InChIKey=CEQFOVLGLXCDCX-UHFFFAOYSA-N

Molecular Weight:

269.3

Exact Mass:

269.30

BRN:

750102

EC Number:

207-776-1

UNII:

69083AX1ZX

NSC Number:

215212|34729|9597

DSSTox ID:

DTXSID1042154

Color/Form:

GLISTENING, VIOLET CRYSTALS FROM TOLUENE|VIOLET OR RED PRISMS (TOLUENE OR BENZENE); NEEDLES (AQ ACETIC ACID); LEAF (DILUTED ALC)

HScode:

29270000

Categories:

Biochemical Reagents

Characteristics

PSA:

65.26000

XLogP3:

4.91

Appearance:

Reddish-violet Solid

Density:

1.31 g/cm³

Melting Point:

181-182 °C

Boiling Point:

479.5±30.0 °C at 760 mmHg

Flash Point:

11 °C

Refractive Index:

1.593

Water Solubility:

Practically insoluble in water.soluble in alcohol, acetic acidsoluble in ethanol. Insoluble in water.ethanol: soluble 1mg/mL

Storage Conditions:

−20°C

Vapor Pressure:

2.89E-10mmHg at 25°C

Dissociation Constants:

PKA1 2.5; PKA2 9.5; PKB 4.8

See More Methyl red Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Methyl red Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate

Location:
9F/TOWER B DANING MUSIC PLAZA NO.777, WANRONG ROAD JINGAN, DISTRICT, SHANGHAI, R.P. CHINA

Payment Terms:
TT against copy of documents,D/P,L/C,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
14

Total Annual Revenue:
$2.5 million-$5 million

Total Employees:
5-10

Year of Establishment:
2022

Inquiry History

3 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Methyl Red	120.00 KG	Jan 26, 2024
Malaysia	Methyl red	25 G	Feb 19, 2024
India	Methyl Red	1.00 MT	Sep 21, 2023

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