4-Hydroxybenzoic acid
4-Hydroxybenzoic acid
CAS: 99-96-7
Molecular Formula: C7H6O3
4-Hydroxybenzoic acid - Names and Identifiers
| Name | 4-Hydroxybenzoic acid |
| Synonyms | 4-hydroxy-benzoicaci benzoicacid,4-hydroxy 4-Hydroxybenzoic acid acidop-idrossibenzoico Benzoicacid,4-hydroxy- Benzoic acid, p-hydroxy- kyselina4-hydroxybenzoova Hydroxybenzoic acid, para Kyselina 4-hydroxybenzoova |
| CAS | 99-96-7 |
| EINECS | 202-804-9 |
| InChI | InChI=1/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)/p-1 |
4-Hydroxybenzoic acid - Physico-chemical Properties
| Molecular Formula | C7H6O3 |
| Molar Mass | 138.12 |
| Density | 1,46 g/cm3 |
| Melting Point | 214-217℃ |
| Boling Point | 336.2°C at 760 mmHg |
| Flash Point | 171.3°C |
| Water Solubility | 5 g/L (20℃) |
| Solubility | Slightly soluble in water, chloroform, soluble in ether, acetone and benzene, soluble in ethanol in any proportion, almost insoluble in carbon disulfide. Dissolve in 125 parts of cold water. |
| Vapor Presure | 4.48E-05mmHg at 25°C |
| Appearance | White to Beige Crystalline Powder |
| Storage Condition | 2-8℃ |
| Sensitive | Sensitive to light |
| Refractive Index | 1.4600 (estimate) |
| MDL | MFCD00002547 |
| Physical and Chemical Properties | Properties of white powder Crystal, tasteless, odorless, taste when the tongue numbness sense soluble in hot water and alcohol, ether, acetone, micro-soluble in cold water, benzene, insoluble in carbon disulfide. Dissolved in 125 parts of cold water |
| Use | Mainly as the basic raw materials of fine chemical products, parabens (parabens) as food, medicine and cosmetics preservatives, has been widely used, it is also widely used in the preparation of various dyes, fungicides, color film and a variety of oil-soluble color forming agents, etc., with a wide range of applications of new high temperature resistant polymer P-Hydroxybenzoic acid polyester also as a basic raw material. |
4-Hydroxybenzoic acid - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
4-Hydroxybenzoic acid - Upstream Downstream Industry
4-Hydroxybenzoic acid - Security information
| WGK Germany | 1 |
| RTECS number | DH1925000 |
| auto-ignition temperature | >250 °C |
| TSCA | Yes |
| customs code | 29182930 |
| toxic substance data | 99-96-7(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
Last Update：2024-04-09 19:04:55
4-Hydroxybenzoic acid - Nature
| FEMA | 3986 | 4-HYDROXYBENZOIC ACID |
| refractive index | 1.4600 (estimate) |
| flash point | 199 °C |
| storage conditions | Store below +30°C. |
| solubility | methanol: soluble5%, clear to slightly hazy, colorless to faintly yellow |
| acidity coefficient (pKa) | 4.48(at 19℃) |
| morphology | Crystalline Powder |
| color | White to ivory |
| PH value | 3.3 (1g/l, H2O, 20℃) |
| water solubility | 5 g/L (20 °C) |
| JECFA Number | 957 |
| Merck | 14,4812 |
| BRN | 970950 |
| InChIKey | FJKROLUGYXJWQN-UHFFFAOYSA-N |
| NIST chemical information | Benzoic acid, 4-hydroxy-(99-96-7) |
| EPA chemical information | p-Hydroxybenzoic acid (99-96-7) |
Last Update：2024-04-09 20:52:54
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View History
Raw Materials for 4-Hydroxybenzoic acid
Potassium hydroxide
Potassium hydroxide solution
Saccharin
Dipotassium rabdosiin Rabdosiin
Methyl 4-bromobenzoate
4-Iodobenzoic acid
Potassium hydroxide solution
Saccharin
Dipotassium rabdosiin Rabdosiin
Methyl 4-bromobenzoate
4-Iodobenzoic acid
Downstream Products for 4-Hydroxybenzoic acid
Anisic acid
CYANOPHOS
Propylparaben
Isopropylparaben
Butylparaben
Heptyl 4-hydroxybenzoate
4-N-BUTOXYBENZOIC ACID
Sorbic acid
CYANOPHOS
Propylparaben
Isopropylparaben
Butylparaben
Heptyl 4-hydroxybenzoate
4-N-BUTOXYBENZOIC ACID
Sorbic acid