Description
Sodium hydroxide solution 25 %, p.a. is an analytical-grade aqueous base corresponding to CAS number 1310-73-2 and empirical formula NaOH. The preparation shows a molar mass of 40,01 g/mol for NaOH, a density of 1,27 g/cm³, and a boiling point of 100 °C, giving clear physical reference data for laboratory use. a. solution supports titrations, pH adjustment, saponification, cleaning protocols, and general inorganic and analytical chemistry workflows. The defined 25 % concentration simplifies dosing and standardisation steps where a reliable sodium hydroxide reagent is required. Suitable for research, teaching, and quality-control laboratories that specify p.a.-grade NaOH solution in plastic packaging for everyday wet-chemistry applications.
This article belongs on Bases & alkalis, in Acids & bases.
Key features
- Assay: 23-27 %
- Density (20 °C): 1.252-1.296
- Carbonate: ≤1 %
- Chloride (Cl): ≤0.005 %
- Sulphate (SO4): ≤0.005 %
- Heavy metals (as Pb): ≤0.0005 %
- Fe (Iron): ≤0.001 %
- CAS number: 1310-73-2
- Pack sizes: 1 l, 2.5 l, 5 l, 10 l, 25 l
- EG nr.: 215-185-5
- Molar mass: 40,01 g/mol
- Density: 1,27 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Sodium hydroxide solution, 25 %, p.a., 1 l, plastic
What is this article?
Sodium hydroxide solution, 25 %, p.a., 1 l, 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?
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