32638-88-3 Usage
Description
PYROGALLOL RED, also known as pyrogallol and 1,2,3-trihydroxy-benzene, is a white, lustrous crystalline compound that turns gray upon exposure to light. It is soluble in water, alcohol, and ether, and its solution acquires a brown color when exposed to air. PYROGALLOL RED is derived by heating gallic acid in an autoclave with three times its weight of water. It has been used for over three centuries and is known for its various applications across different industries.
Uses
Used in Photography:
PYROGALLOL RED is used as a chemical developer for wet collodion negatives and silver bromide gelatin plates, particularly in an alkaline state for chemical development. It is often chosen for the unique yellow stain it imparts to gelatin negatives.
Used in Analytical Chemistry:
PYROGALLOL RED serves as a complexometric indicator for the metal elements molybdenum and copper, playing a crucial role in the analysis and determination of these elements.
Used in Dyes and Metabolites:
PYROGALLOL RED is utilized in the production of dyes and metabolites, contributing to the color and chemical properties of various products.
Used in Medicine (Antibacterial):
PYROGALLOL RED is employed as an antibacterial agent, helping to combat bacterial infections and promote overall health.
Used in Process Engraving:
PYROGALLOL RED is used in the process engraving industry, where its properties contribute to the creation of intricate designs and patterns on various materials.
Used as a Laboratory Reagent:
PYROGALLOL RED is a valuable laboratory reagent, used in various chemical reactions and experiments for research and development purposes.
Used in Gas Analysis:
PYROGALLOL RED functions as an oxygen absorber in gas analysis, helping to determine the presence and concentration of oxygen in different environments.
Used as a Reducing Agent:
PYROGALLOL RED acts as a reducing agent, playing a vital role in various chemical reactions and processes.
Used as an Antioxidant in Lubricating Oils:
PYROGALLOL RED is utilized as an antioxidant in the lubricating oil industry, enhancing the performance and longevity of these oils.
Used as a Protective Colloid:
PYROGALLOL RED is used as a protective colloid in the preparation of metallic colloidal solutions, ensuring the stability and uniformity of these solutions.
Purification Methods
It is recrystallised from aqueous alkaline solution (Na2CO3 or NaOH) by precipitation on acidification, filter it off and dry in a vacuum. [Suk Collect Czech Chem Commun 31 3127 1966, Beilstein 19 H 407, 19 II 417, 19 III/IV 599, 19/10 V 226.]
Check Digit Verification of cas no
The CAS Registry Mumber 32638-88-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,6,3 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 32638-88:
(7*3)+(6*2)+(5*6)+(4*3)+(3*8)+(2*8)+(1*8)=123
123 % 10 = 3
So 32638-88-3 is a valid CAS Registry Number.
InChI:InChI=1/C9H12N2O.C6H6O3/c1-11(2)9(12)10-8-6-4-3-5-7-8;7-4-2-1-3-5(8)6(4)9/h3-7H,1-2H3,(H,10,12);1-3,7-9H
32638-88-3Relevant articles and documents
Ti(IV) doping: An effective strategy to boost Lewis acidic performance of ZnO catalyst in fluorescein dye synthesis
Jadhav, Nirajkumar H.,Shinde, Dnyaneshwar R.,Sakate, Sachin S.,Rasal, Nishant K.,Pawar, Ramdas A.
, p. 17 - 22 (2018/11/25)
Zn1-xTixO NPs were efficiently synthesized using a simple solution free mechanochemical method. The synthesized ZnO and Ti(IV)-doped ZnO catalysts are exhibited polycrystallinity, a hexagonal crystal structure, and roughly spherical agglomerates. The surface areas of the Zn1-xTixO catalysts were positively correlated with the doping percentage of Ti(IV), which also enhanced the Lewis acidity of the NPs. The catalysts exhibited excellent activity during the synthesis of fluorescein dyes. This methodology was also extended to sulfone-fluorescein dye synthesis.
