Description
Sodium metaphosphate is an extra pure, acidic inorganic phosphate reagent with the polymeric empirical formula (NaPO₃)n and CAS number 68915-31-1. Its molar mass is given as (101,97)n g/mol and the density is 2,5 g/cm³; the corresponding EG number is 272-808-3. The extra pure, acidic grade supports reproducible preparation of solutions and solid formulations where consistent phosphate chemistry is essential. Available from manufacturer Carl ROTH, sodium metaphosphate is a practical bulk option for research, analytical and industrial laboratories that need reliable identity data and straightforward handling in standard plastic packaging. Documented CAS, EG and physical parameters simplify specification checks and internal quality records.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- P2O5: 67,5-69,0%
- pH value (1 % in H2O): 5,4-6,5
- Fluoride (F): ≤0,001 %
- Arsenic (As): ≤0,0001 %
- Lead (Pb): ≤0,0001 %
- Iron (Fe): ≤0,01 %
- Cadmium (Cd): ≤0,0001 %
- Insoluble in water: ≤0,05 %
- CAS number: 68915-31-1
- Pack sizes: 1 kg, 5 kg, 25 kg
- EG nr.: 272-808-3
- Molar mass: (101,97)n g/mol
- Density: 2,5 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Sodium metaphosphate, extra pure, acidic, 1 kg, plastic
What is this article?
Sodium metaphosphate, extra pure, acidic, 1 kg, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Inorganic salts, inside Inorganic chemicals, in Lab chemicals.
An inorganic salt is an ionic solid, a chloride, a sulfate, a nitrate, a phosphate. The degree of hydration changes the mass that contains one mole of the ion. Analytical grade limits the foreign ions. A hydrate and the anhydrous salt are not interchangeable by weight.
An inorganic chemical is a salt, an acid or base in solid form, a metal, an oxide, or an element. The waters of hydration are part of the formula: a hydrate and an anhydrous salt are different masses for the same ion. Trace metals matter when the salt will be used in analysis. Nanomaterials add particle size to the specification. Look the substance up on PubChem. Hazard classes are on ECHA, under the CLP Regulation and REACH. Transport of the dangerous ones is explained by the UNECE.
Which category should I open next?
The category is Inorganic chemicals. The sub-category is Inorganic salts. The catalogue is Lab chemicals.
Shelves beside this one are Metals, elements & oxides and Nanomaterials & quantum dots.
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.
How does ordering and shipping work?
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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.