Offering you a complete choice of products which include methyl red indicator 25g and pan indicator (1(2-pyridylazo)-2- naphthol) extrapure ar, 99% (1(2-pyridylazo)-2- naphthol).
Methyl Red Indicator (25g) is a pH indicator, specifically an azo dye, used to visually determine the pH of a solution. It appears red in acidic solutions below pH 4.4, yellow in alkaline solutions above pH 6.2, and orange in the intermediate range. The indicator is commonly used in laboratories to detect pH changes within this specific range. Key Characteristics:
Appearance: It is a dark red crystalline powder.
pH Transition Range: 4.4 (red) to 6.2 (yellow).
Solubility: Soluble in water.
Chemical Formula: C15H15N3O2.
CAS Number: 493-52-7.
Synonyms: 2-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzoic acid, Acid Red 2.
Applications: Used in various chemical and biological applications, including bacterial identification (Methyl Red test) and histopathology.
Additional Information:
Color Change:The color change is due to the protonation and deprotonation of the indicator molecule, which alters its structure and thus its absorbance of light.
Methyl Red Test:In microbiology, the Methyl Red test uses this indicator to identify bacteria that produce large amounts of stable acids through mixed acid fermentation of glucose.
Histopathology:Methyl red is used in histopathology to detect acidic components in tissues and cells.
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Delivery Time: Ready Stock
Packaging Details: Box
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PAN Indicator (1(2-Pyridylazo)-2- Naphthol) extrapure AR, 99% (1(2-Pyridylazo)-2- Naphthol)
1-(2-Pyridylazo)-2-naphthol (PAN) is an indicator, specifically an acid-base indicator, and also a metal chelate reagent. It is commonly used in complexometric titrations due to its ability to form chelates with metal ions. The "extrapure AR, 99%" designation indicates a high purity grade, suitable for laboratory use. Key Properties and Characteristics:
Chemical Formula: C15H11N3O.
Molecular Weight: 249.27 g/mol.
Purity: Minimum 99%.
Appearance: Brick red to orange-brown powder.
Melting Point: Typically 138-140°C.
CAS Number: 85-85-8.
Storage: 25 to 40°C (Room Temperature).
Suitability: Suitable as a complexometric indicator and for spectrophotometric applications.
Color Change: The color change associated with its use as an indicator (e.g., in complexometric titrations) is from red to yellow.
Other Names: (1E)-1-(pyridin-2-ylhydrazono)naphthalen-2(1H)-one.
Applications:
Complexometric Titrations: PAN forms chelates with metal ions, making it useful for determining the concentration of metal ions in solution.
Spectrophotometry: PAN can be used in spectrophotometric methods to extract and determine metal ions.
Acid-Base Indicator: PAN can be used as an acid-base indicator in certain chemical reactions.
Additional Information:
It is a naphthol derivative, meaning it contains a naphthalene ring with a hydroxyl group.
Naphthols are more reactive than phenols.
PAN is soluble in organic solvents such as alcohols, ethers, and chloroform.
