Is ethyl 4 Hydroxybenzoate soluble in water?
Ethylparaben Properties Boiling point: 297-298 °C (lit.) Very slightly soluble in water, freely soluble in ethanol (96 per cent) and in methanol. Slightly soluble in water.
Is propyl 4 Hydroxybenzoate an acid?
Sodium propyl p-hydroxybenzoate, the sodium salt of propylparaben, a compound with formula Na(C3H7(C6H4COO)O), is also used similarly as a food additive and as an anti-fungal preservation agent. Its E number is E217….Propylparaben.
| Names | |
|---|---|
| EC Number | 202-307-7 |
| E number | E216 (preservatives) |
| KEGG | D01422 |
| PubChem CID | 7175 |
Is 4-hydroxybenzoic acid acidic?
4-Hydroxybenzoic acid
| Names | |
|---|---|
| log P | 1.58 |
| Acidity (pKa) | 4.54 |
| Hazards | |
| Main hazards | Irritant |
What is the melting point of 4-hydroxybenzoic acid?
215 – 217 °C
4-Hydroxybenzoic acid for synthesis….Pricing & Availability.
| Physicochemical Information | |
|---|---|
| Density | 1.4041 g/cm3 |
| Ignition temperature | >250 °C |
| Melting Point | 215 – 217 °C |
| pH value | 3.3 (1 g/l, H₂O) |
What is sodium ethyl E215?
Sodium ethyl para-hydroxybenzoate 215 or E215 It is used as an antifungal preservative.
What is propylparaben and methylparaben?
Methylparaben and propylparaben are the most common of these. Parabens are most common in personal care products that contain significant amounts of water such as shampoos, conditioners, lotions and facial and shower cleansers and scrubs because they discourage the growth of microbes.
Is propylparaben soluble in water?
Propylparaben is a colorless and fine crystalline or white crystalline powder, almost odorless and with slightly astringent. Soluble in ethanol, ethyl ether, acetone and other organic solvents, slightly soluble in water.
What is butyl Hydroxybenzoate?
Butylparaben, or butyl p-hydroxybenzoate, is an organic compound with the formula C. 4H. 9O. 2CC. 6H.
Is 4 hydroxybenzoic acid more acidic than benzoic acid?
Therefore, p-hydroxybenzoic acid is a weaker aid (Ka=2.5×10-5) than benzoic acid (Ka=6.3×10-5). As a result, the acidic weakening effect is smaller and metahydroxybenzoic acid is a stronger acid (Ka=8.5×10-5) than benzoic acid.
What is the chemical structure of 4-hydroxybenzoic acid?
4-Hydroxybenzoic acid
| PubChem CID | 135 |
|---|---|
| Structure | Find Similar Structures |
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | C7H6O3 |
| Synonyms | 4-HYDROXYBENZOIC ACID 99-96-7 p-Hydroxybenzoic acid 4-Carboxyphenol Benzoic acid, 4-hydroxy- More… |
What is the density of 4-hydroxybenzoic acid?
1.46 g/cm³
4-Hydroxybenzoic acid/Density
Which is more soluble in water benzoic acid or 4 hydroxybenzoic acid?
4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid ( PHBA ), is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone.
Where can I find 4 hydroxybenzoate 1 hydroxylase?
The enzyme 4-hydroxybenzoate 1-hydroxylase transforms 4-hydroxybenzoate, NAD (P)H, 2 H + and O 2 into hydroquinone, NAD (P) +, H 2 O and CO 2. This enzyme participates in 2,4-dichlorobenzoate degradation. It can be found in Candida parapsilosis .
What is the Hammett equation for 4 hydroxybenzoic acid?
The Hammett equation describes a linear free-energy relationship relating reaction rates and equilibrium constants for many reactions involving benzoic acid derivatives with meta- and para-substituents. 4-Hydroxybenzoic acid is produced commercially from potassium phenoxide and carbon dioxide in the Kolbe-Schmitt reaction.
How is 4-hydroxybenzoic acid produced in the laboratory?
4-Hydroxybenzoic acid is produced commercially from potassium phenoxide and carbon dioxide in the Kolbe-Schmitt reaction. It can also be produced in the laboratory by heating potassium salicylate with potassium carbonate to 240 °C, followed by treating with acid.