11104-88-4 Usage
Description
Phosphomolybdic acid (H5Mo12O41P) is a reagent and indicator, classified as specialty chemicals. It is used for the identification, detection, and analysis of pathologic, biological, or chemical conditions or processes. As an indicator, it undergoes changes in its physical appearance, such as color changes, when a certain chemical titration is approaching the endpoint. As a reagent, it is used to determine or detect the presence of another substance microscopically or chemically, especially through analysis.
Used in Chemical Analysis:
Phosphomolybdic acid is used as a reagent for alkaloids, uric acid, xanthine, creatinine, and some metals. It is also used as a pigment and imparts water resistance to plastics.
Used in Microscopy:
Phosphomolybdic acid is used as a nerve stain in microscopy, in combination with hematoxylin.
Used in Chromatography:
Phosphomolybdic acid is used as a multipurpose staining reagent in chromatography. It is applied in concentrations of 10-20% in polar organic solvents such as ethanol. It stains a majority of functional groups, but it fails to highlight various groups on the basis of the staining spots indicated on the TLC plate. TLC's treated with Phosphomolybdic acid are indicated with a light green coloration, whereas compounds of interest are highlighted by relatively dark green spots. It is essential to apply heat treatment to TLC plates with the Phosphomolybdic acid solution to activate the stain for visualization.
Used in Plating Processes:
Phosphomolybdic acid may be used as a reagent for alkaloids and as an additive in plating processes.
Used in Cement, Adhesives, and Plastics:
Phosphomolybdic acid may be used in enhancing water resistance in cement, adhesives, and plastics.
Used in Basic Dyes:
Phosphomolybdic acid may be applied as a laking agent in basic dyes.
Used in Photography:
Phosphomolybdic acid is used as a fixing agent in photography.
Used in Pigments:
Phosphomolybdic acid is used in pigments.
Used in Petrochemical Processing:
Catalysts comprising various salts and Phosphomolybdic acid are utilized in various sectors of petrochemical processing. It is particularly significant in its application in catalysis during the selective direct oxidation of aldehydes such as methacrolein and isobutyraldehyde to their subsequent dehydrated methacrylic acid and carboxylic acid. Catalysis in the presence or absence of dehydrated Phosphomolybdic acid in combination with trace amounts of promoters such as decomposable salts of alkaline earth metals and alkalis, copper, bismuth, arsenic, antimony, tellurium, and hydroxides has gained a lot of economic interests in recent years.
Chemical and Physical properties
Phosphomolybdic acid has a molecular weight of 1843.373 g/mol, a monoisotopic mass of 1866.669 g/mol and an exact mass of 1841.674 g/mol. It has a hydrogen bond donor and acceptor count of 4 and 41 respectively. Phosphomolybdic acid has a heavy atom count of 54 and a complexity of 112. It has a topographical surface area of 693 A^2 and a covalently-bonded unit count of 14.
Preparation
Phosphomolybdic acid catalysts can be prepared by forming a mixture of hydrated Phosphomolybdic acid in an anhydrous alkyl alcohol. This is followed by adding a base to the mixture and evaporating the mixture to form a catalyst powder, and subsequently calcining and dehydrating the powder to yield the active catalyst. The second method of preparation entails the formation of a solution containing hydrated Phosphomolybdic acid in an anhydrous alkyl alcohol, evaporating the mixture to yield a concentrate and adding a catalyst support substance with the concentrate. This step is followed by contacting the impregnated support with gaseous ammonia in amounts that can yield an insoluble precipitate for ammonium alkyl Phosphomolybdic acid within the membrane of the support substance and thereafter dehydrating and calcining the support material to yield the coated catalyst.
A phosphomolybdic acid stain is prepared by dissolving 10g of phosphomolybdic acid in 100ml of absolute ethanol.
Check Digit Verification of cas no
The CAS Registry Mumber 11104-88-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,1,0 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 11104-88:
(7*1)+(6*1)+(5*1)+(4*0)+(3*4)+(2*8)+(1*8)=54
54 % 10 = 4
So 11104-88-4 is a valid CAS Registry Number.
InChI:InChI=1/Co.Mo.H3O4P.H2O.O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);1H2;/q+2;;;;-2/p-4