Pharmaceutical Secondary Standard; Certified Reference Material

Propyl paraben, Propyl 4-hydroxybenzoate, 4-Hydroxybenzoic acid propyl ester
Linear Formula:
CAS Number:
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Beilstein/REAXYS Number:
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MDL number:
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certified reference material
pharmaceutical secondary standard

Quality Level




current certificate can be downloaded


HPLC: suitable
gas chromatography (GC): suitable


95-98 °C (lit.)

Featured Industry

Cleaning Products
Food and Beverages
Personal Care
Pharmaceutical (small molecule)



pharmacopeia traceability

traceable to PhEur P3650000
traceable to USP 1577008

SMILES string




InChI key


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General description

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. Propylparaben is the benzoate ester, widely used as a preservative in personal care products.


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.

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 LRAC2080 in the slot below. This is an example certificate only and may not be the lot that you receive.


NONH for all modes of transport

WGK Germany


Flash Point F

356.0 °F

Flash Point C

180 °C

Certificate of Analysis

Certificate of Origin

Hye-Min Kang et al.
Chemosphere, 226, 388-394 (2019-04-05)
Parabens are used as a preservative substance in a wide range of man-made products causing deleterious effects on aquatic organisms and therefore, the concern of their effects to aquatic organisms has been increased. In this study, acute toxicity of methylparaben...
Miguel González-Doncel et al.
Environmental pollution (Barking, Essex : 1987), 184, 360-369 (2013-10-08)
Here we proposed a battery of non-invasive biomarkers and a histological survey to examine physiological/anatomical features in embryos, eleutheroembryos (13 days post-fertilization, dpf), and larvae (28-42 dpf) of medaka to investigate the effects of embryonic exposure to propylparaben (PrP). Concentrations <1000 μg...
C L Barberis et al.
Journal of food protection, 73(8), 1493-1501 (2010-09-08)
Each year, a significant portion of the peanuts produced cannot be marketed because of fungal disease at the postharvest stage and mycotoxin contamination. Antioxidants could be used as an alternative to fungicides to control ochratoxigenic fungi in peanuts during storage....
Aeshna Amin et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 75(2), 206-212 (2010-03-09)
p-Hydroxybenzoic acid esters (parabens) are commonly used antimicrobial preservatives in pharmaceutical formulations. Two microorganisms, isolated from non-sterile methyl paraben (MP) and propyl paraben (PP) solutions, were found to degrade the respective parabens. Identification by 16S rRNA partial gene sequencing revealed...
José Manuel Pérez Martín et al.
Mutation research, 702(1), 86-91 (2010-08-05)
Propyl p-hydroxybenzoate, commonly referred to as propylparaben, is the most frequently used preservative to inhibit microbial growth and extend shelf life of a range of consumer products. The objective of this study was to provide further insight into the toxicological...
Separation of Methyl Paraben, analytical standard; Ethylparaben, United States Pharmacopeia (USP) Reference Standard; Propylparaben, United States Pharmacopeia (USP) Reference Standard; Butylparaben, United States Pharmacopeia (USP) Reference Standard
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