Description
Barium hydroxide octahydrate is an extra-pure inorganic base supplied at a minimum purity of 98 % for laboratory synthesis, analytical work, and process chemistry. Its empirical formula is Ba(OH)₂ · 8 H₂O, with a molar mass of 315,48 g/mol and a density of 2,18 g/cm³. The compound is identified by CAS number 12230-71-6 and EG number 241-234-5 and is classified under UN number 3262 for transport handling. This grade is Physical data from the manufacturer support straightforward calculation of molar concentrations and mass balances in both research and teaching laboratories. Barium hydroxide octahydrate from manufacturer Carl ROTH is presented here as a clearly specified extra-pure reagent so that users can match purity, formula weight, and pack format to their protocols without ambiguity. The solid hydrate form is convenient for weighing and dissolution under standard laboratory conditions where a strong alkaline barium source is required.
This article is part of Bases & alkalis, in Acids & bases.
Key features
- Assay (acidim.): ≥98 %
- Carbonate (as BaCO3): ≤1,0 %
- Chloride (Cl): ≤0,05 %
- Iron (Fe): ≤0,003 %
- CAS number: 12230-71-6
- Pack sizes: 500 g, 1 kg, 2.5 kg
- EG nr.: 241-234-5
- Purity: min. 98 %, extra pure
- Empirical formula: Ba(OH)₂ · 8 H₂O
- Molar mass: 315,48 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information

DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Barium hydroxide octahydrate, min. 98 %, extra pure, 500 g, plastic
What is this article?
Barium hydroxide octahydrate, min. 98 %, extra pure, 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Bases & alkalis, inside Acids & bases, in Lab chemicals.
A base or an alkali is sodium hydroxide, potassium hydroxide, ammonia and their relatives, as solid or as solution. The carbonate that a hydroxide picks up from the air changes a titre. Concentration and purity are the specification. Concentrated alkalis attack skin and aluminium.
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 Bases & alkalis. The catalogue is Lab chemicals.
Shelves beside this one are Acids.
What should I check before I order?
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.

