ChemicalBook > CAS DataBase List > Cresol Red

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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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

1733-12-6, Cresol RedRelated Search:

Xylenol o-Cresol 4-Methylbenzenesulfonhydrazide Cresol Bromocresol green Quartz p-Cresol XYLENOL ORANGE Potassium phthalimide Dimethyl sulfone Phenylmethylsulfonyl fluoride Thiourea dioxide m-Cresol Carbon dioxide Sulfosulfuron Sodium Thymol Blue Rutile sulfur dioxide

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  • 3',3''-DIMETHYLPHENOLSULFONEPHTHALEIN
  • O-TOLUENESULFONIC ACID, A,A-BIS(5-BROMO-4-HYDROXY-M-TOLYL)-A-HYDROXY-, G-SULTONE
  • O-TOLUENESULFONIC ACID, A-HYDROXY-A,A-BIS(4-HYDROXY-M-TOLYL)-, G-SULTONE
  • O-CRESOLSULFONPHTHALEIN
  • O-CRESULFONPHTHALEIN
  • O-CRESOL, 4,4'-(3H-2,1-BENZOXATHIOL-3-YLIDENE)BIS[6-BROMO-, S,S-DIOXIDE
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