What is phenyl phosphate?
Phenyl phosphate is an aryl phosphate resulting from the mono-esterification of phosphoric acid with phenol. It has a role as a mouse metabolite.
What is disodium phenyl phosphate?
Phosphoric acid, monophenyl ester, sodium salt (1:2) Disodium phenyl phosphate.
What is the formula of triphenyl phosphate?
C18H15O4PTriphenyl phosphate / Formula
Which enzyme has the ability to liberate phenol from phenol phosphoric acid compound?
Alkaline phosphatase is commonly used as label in ELISA. It catalyzes the hydrolysis of phenyl phosphate to phenol and phosphate.
Is triphenyl phosphate volatile?
TPP was also selected as the next most volatile agent with volatilisation starting at about 200 °C.
What does triphenyl phosphate do?
Triphenyl Phosphate is a colorless solid with a Phenol-like odor. It is used as a fire-retarding agent and a plasticizer for Cellulose Acetate and Nitrocellulose.
What is the pKa of phosphoric acid?
Chapter 27 Appendix C: Dissociation Constants and pK a Values for Acids at 25°C
| Name | Formula | pK a1 |
|---|---|---|
| Phosphoric acid | H 3PO 4 | 2.16 |
| Phosphorous acid | H 3PO 3 | 1.3* |
| Pyrophosphoric acid | H 4P 2O 7 | 0.91 |
| Resorcinol | C 6H 4(OH) 2 | 9.32 |
What is the pH of phosphoric acid?
Phosphoric Acid (triprotic): H3PO4 The second disassociation pKa value for phosphoric acid is 7.21. From this, it is known that at a pH of 7.21, the equilibrium of H2PO4 – and HPO4 2- will be 50/50.
What is the principle of phosphatase test?
This test is based on the principle that the alkaline phosphatase enzyme in raw milk liberates phenol from a disodium para-nitro phenyl phosphate and forms a yellow coloured complex at alkaline pH (Scharer, 1943). The intensity of yellow colour produced is proportional to the activity of the enzyme.
What is the purpose of phosphatase test?
An alkaline phosphatase test is used to detect diseases of the liver or bones.
What is triphenyl phosphate used for?
Triphenyl phosphate is an organophosphate flame retardant. It has been added as a flame retardant to a variety of products, such as foam used in upholstered furniture, children’s products, and electronic equipment.
Is triphenyl phosphate soluble in water?
Triphenyl phosphate is practically insoluble in water at 1.9 × 10 7 mg/l at 24 °C (Yalkowsky et al., 2010). It is very soluble in carbon tetrachloride (Haynes, 2010) and is soluble in most lacquers, solvents, thinners, and oils, as well as in alcohol, benzene, ether, chloroform, and acetone (Lewis, 1996).
Is triphenyl phosphate safe?
* Triphenyl Phosphate may cause a skin allergy. If allergy develops, very low future exposure can cause itching and a skin rash. * Triphenyl Phosphate may affect the liver and kidneys. * High or repeated exposure may damage the nerves causing weakness, “pins and needles,” and poor coordination in the arms and legs.
Why does phosphoric acid have 3 pKa values?
Because phosphoric acid has three acidic protons, it also has three pKa values.
What is the pKa of HPO4 2?
The pKa values of these conjugated species are 2.1 for H3PO4/H2PO4 − , 7.2 for H2PO4 − /HPO4 2− , and 12.0 for HPO4 2− /PO4 3− as noted in Table 1.
What is the importance of phosphatase test?
Charm phosphatase tests enable dairies and food processors to quickly and easily make sure that milk is fully pasteurized. The absence of alkaline phosphatase in milk is an indicator that milk has been held at the correct temperature and for the correct time to be fully pasteurized.