Methyl Red sodium salt

Product Name: Methyl Red sodium salt
CAS No.: 845-10-3
Chemical Name: Methyl Red sodium salt
Synonyms: MR;S NO 250;ACID RED;NR3C2VIT;MethyleRed;C.I. 13020;CI NO 13020;watersoluable;Red sodium saL;Sodiummethylred
CBNumber: CB7112964
Molecular Formula: C15H16N3NaO2
Formula Weight: 293.3
MOL File: 845-10-3.mol

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Methyl Red sodium salt Property

Melting point:: 178-182 °C
Boiling point:: 64.7 °C
Density: 0.791
bulk density: 360kg/m3
Flash point:: 12 °C
storage temp.: Store at +5°C to +30°C.
solubility: H₂O: soluble
form: Solid
pka: 2.3, 5.0(at 25℃)
Colour Index: 13020
color: White to yellow or beige, darkening on exposure to light
PH: 8.2 (10g/l, H2O, 25℃)
PH Range: Red (1.2) to orange (3.4);Red (4.2) to yellow (6.3)
Odor: Odorless
Water Solubility: Soluble in water. Slightly soluble in ethanol.
λmax: 437nm, 410nm, 493nm
BRN: 4065488
Stability:: Reported to be unstable, but this is probably a mistake on a commercial MSDS sheet. Incompatible with strong oxidizing agents.
Major Application: optical fibers, liquid crystal cells, holography, inks, toner, corrosion inhibitor, detergent
CAS DataBase Reference: 845-10-3(CAS DataBase Reference)
EPA Substance Registry System: Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-, sodium salt (845-10-3)

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Safety

Hazard Codes: Xn,C,F
Risk Statements: 40-34-11
Safety Statements: 36/37-24/25-45-36/37/39-26-16
RIDADR: UN 1170 3/PG 2
WGK Germany: 3
TSCA: Yes
HazardClass: 3
PackingGroup: II
HS Code: 29270000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 114502
Product name: Methyl Red sodium salt
Purity: ACS reagent, Dye content 95%
Packaging: 25g
Price: $72.2
Updated: 2025/07/31

Sigma-Aldrich

Product number: 114502
Product name: Methyl Red sodium salt
Purity: ACS reagent, Dye content 95%
Packaging: 100g
Price: $219
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.06078
Product name: Methyl red sodium salt (C.I. 13020)
Purity: water-soluble ACS
Packaging: 25g
Price: $663
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.06078
Product name: Methyl red sodium salt (C.I. 13020)
Purity: water-soluble ACS
Packaging: 100g
Price: $2330
Updated: 2025/07/31

TCI Chemical

Product number: M0424
Product name: Methyl Red Sodium Salt
Packaging: 1g
Price: $16
Updated: 2025/07/31

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Methyl Red sodium salt Chemical Properties,Usage,Production

Chemical Properties

orange powder

Uses

Methyl Red sodium salt is used as a pH indicator. In microbiology, it is used to make agar plates in bacteriology. Further, it is used as a coloring agent and also finds use in mouthwash, toothpaste and in cosmetics. It is also employed as a rocket propellant. In addition to this, it is used in the preparation of reversible stain for rapid detection of stained cells in each specimen.

General Description

Methyl red sodium salt is the sodium salt of methyl red synthetic dye, which belongs to the azo group of dyes.

Biochem/physiol Actions

Methyl Red is a pH indicator and it changes color at a pH of 5.5.

Purification Methods

It can be precipitated from aqueous solution as the free acid which is recrystallised from 95% EtOH, then reconverted to the sodium salt. In H2O it is pink at pH 4.2 and yellow at pH 6.2 and has at 437nm.

Methyl Red sodium salt Preparation Products And Raw materials

Raw materials

Preparation Products

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Methyl Red sodium salt Suppliers

Americas 1 Austria 1 Belgium 1 Canada 4 CHINA 179 Czech Republic 2 Europe 3 France 1 Germany 5 India 23 Japan 3 Mexico 1 Poland 1 Russia 2 Switzerland 2 Ukraine 1 United Kingdom 12 United States 49 Global 291

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View Lastest Price from Methyl Red sodium salt manufacturers

Shaanxi Dideu Medichem Co. Ltd

Product: Methyl Red sodium salt 845-10-3
Price: US $0.10-11.00/KG
Min. Order: 0.1KG
Purity: 99%
Supply Ability: 20TONS
Release date: 2025-04-23

Hebei Dangtong Import and export Co LTD

Product: Methyl Red sodium salt 845-10-3
Price: US $115.00/kg
Min. Order: 100kg
Purity: 99.99%
Supply Ability: 100Tons
Release date: 2023-03-17

Career Henan Chemical Co

Product: Methyl Red sodium salt 845-10-3
Price: US $1.00/KG
Min. Order: 1G
Purity: 99%
Supply Ability: 100KG
Release date: 2018-08-13

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