Description
4-Hydroxybenzoic acid methyl ester is an organic compound of pharmacopoeia quality supplied at min. 98 % (Ph.Eur.) with CAS number 99-76-3 and empirical formula C₈H₈O₃. The molar mass is 152,15 g/mol, density is 1,38 g/cm³ and the boiling point ranges from 270 to 280 °C; the EG number is 202-785-7. This grade is Eur.-aligned material for chemical synthesis, formulation work or analytical reference use within chemicals of pharmacopoeia quality. Physical data from manufacturer Carl ROTH support identity checks and handling decisions during weighing, dissolution and process development. The ester is widely recognised in pharmaceutical and fine-chemical contexts as methylparaben-type material and fits workflows that specify European Pharmacopoeia quality for starting materials or intermediates. Clear CAS, formula and purity information on the listing help procurement and quality units document incoming goods against internal specifications without relying on unverified claims beyond the stated manufacturer data.
This article is part of Acids, in Acids & bases.
Key features
- Appearance: white to almost white powder
- Appearance of solution (10 % in ethanol 96 %): complies
- Assay (HPLC): 98,0-102,0 %
- Melting point: 125-128 °C
- Acidity (0,1 M NaOH/0,2 g): complies
- Sulphated ash: ≤0,1 %
- Related substances (p-HBA): ≤0,5 %
- Related substances (unspecific impurities): ≤0,5 %
- Related substances (total): ≤1,0 %
- Volatile organic impurities: complies
- CAS number: 99-76-3
- Pack sizes: 100 g, 250 g, 500 g, 1 kg
- EG nr.: 202-785-7
- Purity: min. 98 %, Ph.Eur.
- Empirical formula: C₈H₈O₃
- Molar mass: 152,15 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about 4-Hydroxybenzoic acid methyl ester, min. 98 %, Ph.Eur., 100 g, plastic
What is this article?
4-Hydroxybenzoic acid methyl ester, min. 98 %, Ph.Eur., 100 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Acids, inside Acids & bases, in Lab chemicals.
An acid on this shelf is the substance itself, concentrated or as a stated solution: hydrochloric, sulfuric, nitric, acetic and the rest. Concentration, purity and the trace metals decide the use. A concentrated acid and a volumetric solution of the same name are different products, and both burn.
An acid donates a proton. A base accepts one. In the bottle, the practical differences are the concentration, the purity and the anion or cation that comes along. Concentrated mineral acids are a different article from a dilute volumetric solution. The water in the acid, and the trace metals, decide whether it can be used for analysis. Check the substance on PubChem and the classification on ECHA CLP. Transport is the UNECE dangerous-goods framework. The legal texts are the CLP Regulation and REACH.
Which category should I open next?
The category is Acids & bases. The sub-category is Acids. The catalogue is Lab chemicals.
Shelves beside this one are Bases & alkalis.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.