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Salicylic acid

Pharmaceutical Secondary Standard; Certified Reference Material

2-Hydroxybenzoic acid
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


certified reference material
pharmaceutical secondary standard

vapor density

4.8 (vs air)

vapor pressure

1 mmHg ( 114 °C)


current certificate can be downloaded


HPLC: suitable
gas chromatography (GC): suitable


211 °C (lit.)


158-161 °C (lit.)

Featured Industry

Pharmaceutical (small molecule)



pharmacopeia traceability

traceable to BP 775
traceable to PhEur S020000
traceable to USP 1609002

SMILES string




InChI key


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General description

Salicylic acid is an important material in pharmaceutical industry, obtained via the decomposition of acetylsalicylic acid. Salicylic acid is widely used in food industry for producing dyes and artificial scents. It also shows therapeutic potential in protecting the skin from sun damage and hence finds applications in cosmetics and medicine.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.


These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Salicylic acid may be used as a pharmaceutical reference standard for the quantification of the analyte in pharmaceutical formulations using spectrofluorometric technique.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.


To see an example of a Certificate of Analysis for this material enter LRAC3036 in the slot below. This is an example certificate only and may not be the lot that you receive.

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 2

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

314.6 °F - closed cup

Flash Point(C)

157 °C - closed cup

Certificate of Analysis

Certificate of Origin

Nickel?aluminum layered double hydroxide as a nanosorbent for selective solid-phase extraction and spectrofluorometric determination of salicylic acid in pharmaceutical and biological samples
Abdolmohammad-Zadeh H, et al.
Talanta, 84(2), 368-373 (2011)
Simultaneous determination of naproxen, salicylic acid and acetylsalicylic acid by spectrofluorimetry using partial least-squares (PLS) multivariate calibration
Navalon A, et al.
Talanta, 48(2), 469-475 (1999)
E Benfeldt et al.
Acta dermato-venereologica, 79(5), 338-342 (1999-09-24)
Our aim was to simultaneously investigate 2 techniques for in vivo sampling of peripheral compartment pharmacokinetics after systemic administration of acetylsalicylic acid. Ten volunteers were given 2 g acetylsalicylic acid orally. Blood samples and dialysates from 4 microdialysis probes inserted...
S Zaugg et al.
Journal of chromatography. B, Biomedical sciences and applications, 752(1), 17-31 (2001-03-20)
Acetylsalicylic acid (Aspirin) is rapidly metabolized to salicylic acid (salicylate) and other compounds, including gentisic acid and salicyluric acid. Monitoring of salicylate and its metabolites is of toxicological, pharmacological and biomedical interest. Three capillary electrophoresis (CE) methods featuring alkaline aqueous...
Dorothea Ellinger et al.
Plant physiology, 161(3), 1433-1444 (2013-01-22)
A common response by plants to fungal attack is deposition of callose, a (1,3)-β-glucan polymer, in the form of cell wall thickenings called papillae, at site of wall penetration. While it has been generally believed that the papillae provide a...


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Separation of Acetylsalicylic acid, analytical standard; Salicylic acid, BioXtra, ≥99.0%

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Separation of Salicylic acid, meets analytical specification of Ph. Eur., BP, USP, 99.5-100.5% (calc. to the dried substance); Acetylsalicylic acid, purum, ≥99.0% (HPLC)

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Separation of 4-Hydroxybenzoic acid; Acetylsalicylic acid; Benzoic acid; Salicylic acid; Ethyl 4-hydroxybenzoate

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HPLC Analysis of Benzoic Acid Derivatives on Ascentis® C18

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