Cresol Red

Product Name: Cresol Red
CAS No.: 1733-12-6
Chemical Name: Cresol Red
Synonyms: CR;BROMCRESOL PURPLE;CRGF;NSC 7224;cresolre;BETZ 0419;Cresol Red;Cvesol red;TDGF1 human;O-CRESOL RED
CBNumber: CB4376563
Molecular Formula: C21H18O5S
Formula Weight: 382.43
MOL File: 1733-12-6.mol

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Cresol Red Property

Melting point:: 290 °C
Boiling point:: 479.59°C (rough estimate)
Density: 0.998 g/cm3
refractive index: 1.5300 (estimate)
storage temp.: Store at +5°C to +30°C.
solubility: Solubility Sparingly soluble in water; soluble in ethanol
form: Powder
pka: 1.0(at 25℃)
color: Dark green or brown-red
PH Range: 7.2(YELLOW)--8.8(PURPLISH RED)
PH: 7.2～8.8
Water Solubility: soluble
λmax: 570nm, 367nm, 432nm
Merck: 14,2578
BRN: 343399
Major Application: Display device, optical sensors, combustion gas detection system, inks, correction fluid, diapers, toothpaste, identifying fresh and stale rice, food storage, determine glucose in dialysis solution, monitor metabolic activity of microorganisms, detect bacterialinfection, psychoactive drugs, dental impression material
InChIKey: ASMGMVUGPNODGX-UHFFFAOYSA-N
EPA Substance Registry System: Cresol Red (1733-12-6)

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Safety

Hazard Codes: Xi,Xn,F
Risk Statements: 36/37/38-20/21/22-11
Safety Statements: 24/25-36-26-16
RIDADR: UN1170 - class 3 - PG 3 - Ethanol, solution
WGK Germany: 3
TSCA: Yes
HS Code: 29349990
Toxicity: A potent lacrimator which is chemically stable and retains its irritancy in water and so can be used in liquid jets in personnel control. In addition to lacrimation, it causes eye pain, blepharospasm, eyelid swelling, irritation of the conjunctiva, a rise in intraocular pressure, and erythema of the skin. Because it can be used in water, its use is less affected by changes in climatic conditions. It is a more potent lacrimator than CS but it is less potent in lethality than CS.

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

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.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 114472
Product name: Cresol red
Purity: indicator grade, Dye content 95%
Packaging: 5g
Price: $24.3
Updated: 2024/03/01

Sigma-Aldrich

Product number: 114472
Product name: Cresol red
Purity: indicator grade, Dye content 95%
Packaging: 25g
Price: $83.3
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.05225
Product name: Cresol red
Purity: indicatorReag.PhEur
Packaging: 5G
Price: $208
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.05225
Product name: Cresol red
Purity: indicatorReag.PhEur
Packaging: 25g
Price: $520
Updated: 2024/03/01

TCI Chemical

Product number: C0406
Product name: Cresol Red
Purity: >98.0%(HPLC)
Packaging: 1g
Price: $30
Updated: 2024/03/01

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Cresol Red Chemical Properties,Usage,Production

Chemical Properties

Dark green or brown-red powder

Uses

Cresol red is commonly used with lead acetate for the detection of urease after PAGE. It is also used as an indicator with the following transition intervals: pH 1.8 (orange) to pH 2.0 (yellow); pH 7.0 (yellow) to pH 8.8 (violet). Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase.

Uses

Acid-base indicator.

Definition

ChEBI: A member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 4-hydroxy-5-methylphenyl groups.

Purification Methods

Crystallise it from glacial acetic acid. Dry it in air. Dissolve it in aqueous 5% NaHCO3 solution and precipitate it from a hot solution by dropwise addition of aqueous HCl. Repeat the procedure till the UVmax does not increase. [Beilstein 19 IV 1133.]

Cresol Red Preparation Products And Raw materials

Raw materials

Methanesulfonic anhydride Zinc chloride o-Cresol

Preparation Products

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Cresol Red Suppliers

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View Lastest Price from Cresol Red manufacturers

hebei hongtan Biotechnology Co., Ltd

Product: Cresol Red 1733-12-6
Price: US $20.00/kg
Min. Order: 1kg
Purity: 99.9%
Supply Ability: 1000
Release date: 2024-03-22

Baoji Guokang Bio-Technology Co., Ltd.

Product: Cresol Red 1733-12-6
Price: US $120.00/KG
Min. Order: 25Kg/Bag
Purity: 98%
Supply Ability: 1-10mt
Release date: 2021-06-02

Hebei Weibang Biotechnology Co., Ltd

Product: Cresol Red 1733-12-6
Price: US $30.00-10.00/KG
Min. Order: 50KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-11-05

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