Phenolsulfonic acid
CAS 1333-39-7
EC 215-587-0
Formula C6H6O4S
MW 174.17 g/mol
Organic Acids Water TreatmentPharmaceuticals & HealthcareTextile, Leather & Paper pH Regulation & BufferingCatalysis
Description
Phenolsulfonic acid (CAS 1333-39-7, EC 215-587-0) is a strong organic acid supplied as an aqueous liquid, commercially available under trade names including CA 645A, Resinol PS 63, and Sulfocarbolic acid. It carries no assigned E-code and is categorised within organic acids with the molecular formula C6H6O4S.
In water treatment, phenolsulfonic acid functions as a pH-regulating agent, its strong acidic character enabling precise buffering in process streams. In electroplating and metal finishing, it acts as a catalyst and bath stabiliser, promoting uniform metal deposition. The leather and textile industries use it to facilitate dye fixation through controlled acidic conditioning of substrates.
Phenolsulfonic acid is supplied in liquid form and falls under REACH registration requirements for European procurement. Buyers should confirm grade specification and concentration with the supplier, as commercial solutions vary in active content. Standard packaging formats include IBC containers and bulk tanker delivery for industrial volumes.
In water treatment, phenolsulfonic acid functions as a pH-regulating agent, its strong acidic character enabling precise buffering in process streams. In electroplating and metal finishing, it acts as a catalyst and bath stabiliser, promoting uniform metal deposition. The leather and textile industries use it to facilitate dye fixation through controlled acidic conditioning of substrates.
Phenolsulfonic acid is supplied in liquid form and falls under REACH registration requirements for European procurement. Buyers should confirm grade specification and concentration with the supplier, as commercial solutions vary in active content. Standard packaging formats include IBC containers and bulk tanker delivery for industrial volumes.
Physical Properties
| Boiling Point | 275.14°C (rough estimate) |
| Density | 1.384 (estimate) |
| Form | liquid |
| Refractive Index | 1.5500 (estimate) |
| pH | 1 (20°C, 50g/L in H2O) |
Trade & Regulatory
| Storage Class | 8A - Combustible corrosive hazardous materials |
| WGK (Germany) | 1 |
Other Names
CA 645ASulfophenolResinol PS 63phenolsulfonicSULFOCARBOLIC ACIDphenolsulfonicacidliquid
Related Products
Need a chemical? Get a quote within 24 hours.