Description
Sodium sulphite is an anhydrous analytical-grade salt supplied at min. 98 % purity to p.a. and ACS specifications. It carries CAS number 7757-83-7, empirical formula Na₂SO₃ and EG nr. 231-821-4, with a molar mass of 126,04 g/mol and a density of 2,63 g/cm³. Available from manufacturer Carl ROTH, this grade supports reducing and oxygen-scavenging steps, standard solution make-up and general inorganic laboratory use. High purity together with ACS/p.a. classification helps laboratories maintain reproducible results when sodium sulphite is employed as a reagent or reference material in analytical and application-oriented settings.
This article is part of Analytical grade solvents (p.a.), in Solvents.
Key features
- Assay (iodom.): ≥98.0 %
- In H2O insoluble matter: ≤0.005 %
- Acidity: complies
- Alkalinity: ≤0.03 meq/g
- Thiosulphate: complies
- Chloride (Cl): ≤0.02 %
- Arsenic (As): ≤0.0001 %
- Lead (Pb): ≤0.001 %
- Calcium (Ca): ≤0.013 %
- Iron (Fe): ≤0.001 %
- CAS number: 7757-83-7
- Pack sizes: 500 g, 1 kg, 2.5 kg
- Purity: min. 98 %, p.a., ACS
- Molar mass: 126,04 g/mol
- Density: 2,63 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Sodium sulphite, min. 98 %, p.a., ACS, anhydrous, 500 g, plastic
What is this article?
Sodium sulphite, min. 98 %, p.a., ACS, anhydrous, 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Analytical grade solvents (p.a.), inside Solvents, in Lab chemicals.
An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.
A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.
Which category should I open next?
The category is Solvents. The sub-category is Analytical grade solvents (p.a.). The catalogue is Lab chemicals.
Shelves beside this one are HPLC & LC-MS grade solvents, Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents.
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