p-Hydroxybenzenearsonic acid
4-hydroxyphenylarsonic acid
CAS: 98-14-6
Molecular Formula: C6H7AsO4
p-Hydroxybenzenearsonic acid - Names and Identifiers
p-Hydroxybenzenearsonic acid - Physico-chemical Properties
| Molecular Formula | C6H7AsO4 |
| Molar Mass | 218.04 |
| Melting Point | 177.5°C (rough estimate) |
| Boling Point | 88°C |
| Flash Point | 288.3°C |
| Water Solubility | almost transparency |
| Solubility | Water (Slightly) |
| Vapor Presure | 4.68E-12mmHg at 25°C |
| Appearance | solid |
| Color | White powder or yellow prisms from AcOH or Me2CO |
| pKa | pK1:3.89;pK2:8.37(phenol);pK3:10.05 (25°C) |
| Storage Condition | Refrigerator |
| MDL | MFCD00045707 |
| Physical and Chemical Properties | White needle crystal. Melting point 170-174 ℃, easily soluble in water, ethanol or dilute mineral acid, slightly soluble in acetone, extremely difficult to dissolve in ether and ethyl acetate. |
p-Hydroxybenzenearsonic acid - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S22 - Do not breathe dust. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | 1554 |
| RTECS | CY5075000 |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | LDLo orl-rat: 450 mg/kg JPETAB 63,122,38 |
p-Hydroxybenzenearsonic acid - Reference Information
| Use | p-hydroxybenzoylic acid is an intermediate of antispirochete and disinfectant, and is also a reagent for detecting titanium and zirconium. |
| production method | is prepared by the arsine reaction of phenol and gallic acid. Arsenic acid was dissolved in water, and the solution was heated to 180 °c, dehydrated and concentrated, and then cooled to 110 °c. Phenol was added and the reaction was stirred at 102-110 °c for 28H. Water is added to the solution with a relative density of 1.85-1.90, and crystals are cooled and filtered to obtain a crude product. The mother liquor is arsenic acid, which is applied after treatment. The crude product was recrystallized with water, and decolorized with activated carbon to obtain p-hydroxybenzoylic acid. Another method of preparation is the diazotization of p-aminobenzoic acid and hydrolysis. |
Last Update：2024-04-09 21:21:28
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View History
p-Hydroxybenzenearsonic acid
丁酸钙
n-Octyltrichlorotin
Methacryloyl chloride
DICHLOROPHENYLSILANE
TRANS-2-UNDECENAL
UN3057
kobe-2602
Yellow GHS
N-PENTYL ACETATE
丁酸钙
n-Octyltrichlorotin
Methacryloyl chloride
DICHLOROPHENYLSILANE
TRANS-2-UNDECENAL
UN3057
kobe-2602
Yellow GHS
N-PENTYL ACETATE