What is Phenyl Salicylate CAS 118-55-8, also known as Salol?

Phenyl Salicylate CAS 118-55-8, also called salol or phenyl 2-hydroxybenzoate, is the phenyl ester of salicylic acid. It has the molecular formula C13H10O3, a molecular weight of 214.22 g/mol, and is supplied as a white crystalline powder or granules.

How does Phenyl Salicylate work as a UV stabilizer?

The salicylate group absorbs ultraviolet radiation and converts it to less damaging energy, so phenyl salicylate is used to stabilize plastics, lacquers, glues and waxes against UV-induced yellowing and degradation. It is especially relevant to cellulose nitrate and ethyl cellulose systems.

Why was Phenyl Salicylate used as a pharmaceutical antiseptic?

Phenyl salicylate remains largely intact in the acidic stomach and then hydrolyzes in the small intestine to release phenol and salicylic acid. This controlled release mechanism was the basis of its historical internal antiseptic use, though its use in modern medicine is limited.

What are the key specifications of Phenyl Salicylate CAS 118-55-8?

Typical product specifications include assay of at least 99.0%, melting point about 41-43 C, loss on drying not more than 0.5%, ash not more than 0.1%, and heavy metals not more than 10 ppm. It is practically insoluble in water but soluble in ethanol, ether, benzene and many organic solvents.

How should low-melting Phenyl Salicylate be stored and handled?

Because it melts around 41-43 C, phenyl salicylate should be stored in a cool, dry area below about 30 C, away from heat and direct sunlight. Keep it in tightly sealed containers to prevent caking, moisture pickup and product loss through localized melting.

Phenyl Salicylate CAS 118-55-8

Phenyl Salicylate (Salol), CAS 118-55-8, is a phenyl ester of salicylic acid supplied as a UV stabilizer, preservative and pharmaceutical intermediate. Confirm the required grade and purity, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 118-55-8
Synonyms: Salol, Phenyl 2-hydroxybenzoate, 2-Hydroxybenzoic acid phenyl ester, Phenyl o-hydroxybenzoate
Einecs: 204-259-2
Molecular Formula: C₁₃H₁₀O₃
Grade: Technical Grade / USP / BP
Package: 25kg Fiber Drum or Cardboard Drum

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Product Description

Phenyl Salicylate, CAS 118-55-8, also called Salol, is the phenyl ester of salicylic acid.

Synonyms: Salol; Phenyl 2-hydroxybenzoate; 2-Hydroxybenzoic acid phenyl ester; Phenyl o-hydroxybenzoate.

CAS: 118-55-8.

It is a white crystalline powder or granules with a mild characteristic aromatic odor.

It has an assay of not less than 99.0% and a melting point of about 41–43 °C.

It is practically insoluble in water and soluble in ethanol, ether, benzene and many organic solvents.

The salicylate group absorbs UV radiation and stabilizes plastics, lacquers, glues and waxes against yellowing and degradation.

It is especially relevant to cellulose nitrate and ethyl cellulose systems.

It is used as a preservative and antiseptic in lotions and creams, and as a UV filter in some sun-care formulations.

It acts as a fixative and modifier in floral fragrance compositions such as carnation and jasmine.

It is used as a pharmaceutical intermediate in the synthesis of analgesic and antipyretic drugs.

Historically it was used as an internal antiseptic because it hydrolyzes in the small intestine to release phenol and salicylic acid.

It has a low melting point, so it must be stored strictly below 30 °C in a cool place.

Confirm appearance, odor, assay, melting point, acidity, loss on drying, residue on ignition, sulphates, heavy metals, solubility and packaging form.

Store in a cool, dry, well-ventilated area below about 30 °C, away from heat, direct sunlight and strong oxidizers.

Keep containers tightly sealed and light-resistant, as heat can cause melting and caking, and strong light can cause discoloration.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and purity, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Phenyl Salicylate CAS 118-55-8, also known as Salol?

A: Phenyl Salicylate CAS 118-55-8, also called salol or phenyl 2-hydroxybenzoate, is the phenyl ester of salicylic acid. It has the molecular formula C13H10O3, a molecular weight of 214.22 g/mol, and is supplied as a white crystalline powder or granules.
Q:
How does Phenyl Salicylate work as a UV stabilizer?

A: The salicylate group absorbs ultraviolet radiation and converts it to less damaging energy, so phenyl salicylate is used to stabilize plastics, lacquers, glues and waxes against UV-induced yellowing and degradation. It is especially relevant to cellulose nitrate and ethyl cellulose systems.
Q:
Why was Phenyl Salicylate used as a pharmaceutical antiseptic?

A: Phenyl salicylate remains largely intact in the acidic stomach and then hydrolyzes in the small intestine to release phenol and salicylic acid. This controlled release mechanism was the basis of its historical internal antiseptic use, though its use in modern medicine is limited.
Q:
What are the key specifications of Phenyl Salicylate CAS 118-55-8?

A: Typical product specifications include assay of at least 99.0%, melting point about 41-43 C, loss on drying not more than 0.5%, ash not more than 0.1%, and heavy metals not more than 10 ppm. It is practically insoluble in water but soluble in ethanol, ether, benzene and many organic solvents.
Q:
How should low-melting Phenyl Salicylate be stored and handled?

A: Because it melts around 41-43 C, phenyl salicylate should be stored in a cool, dry area below about 30 C, away from heat and direct sunlight. Keep it in tightly sealed containers to prevent caking, moisture pickup and product loss through localized melting.

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