Description
Sodium dihydrogen phosphate dihydrate is an analytical-grade monobasic phosphate salt with a minimum purity of 99 % (p.a.). It is identified by CAS number 13472-35-0 and EG nr. 231-449-2, has the empirical formula NaH₂PO₄ · 2 H₂O, a molar mass of 156,01 g/mol, and a density of 1,91 g/cm³. The dihydrate is widely applied in buffer preparation, pH control, and reagent work for histology, microscopy, and general laboratory chemistry. The material from manufacturer Carl ROTH suits life-science and analytical settings where high-purity phosphate salts are preferred. Together with dibasic phosphates it enables classic phosphate buffer systems covering ranges used in staining protocols, sample stabilisation, and aqueous media. Inclusion of two water molecules in the crystal lattice is reflected in the formula weight, supporting precise molar calculations. This p.a. grade is intended for laboratories that need reliable monobasic sodium phosphate dihydrate for reproducible buffering and related inorganic reagent applications.
This article belongs on Microscopy accessories, in Microscopy & histology.
Key features
- Assay (acidim.): ≥99,0 %
- pH value (5 % in H2O): 4,2-4,5
- In H2O insoluble matter: ≤0,005 %
- Total nitrogen (as N): ≤0,001 %
- Chloride (Cl): ≤0,0005 %
- Sulphate (SO4): ≤0,003 %
- Arsenic (As): ≤0,00005 %
- Lead (Pb): ≤0,0002 %
- Calcium (Ca): ≤0,005 %
- Iron (Fe): ≤0,0005 %
- CAS number: 13472-35-0
- Pack sizes: 500 g, 1 kg, 2.5 kg, 25 kg
- EG nr.: 231-449-2
- Purity: min. 99 %
- Molar mass: 156,01 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Sodium dihydrogen phosphate dihydrate, min. 99 %, p.a., 500 g, plastic
What is this article?
Sodium dihydrogen phosphate dihydrate, min. 99 %, p.a., 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Microscopy accessories, inside Microscopy & histology, in Instruments de précision.
Microscopy accessories are the stages, the holders, the bulbs and the cameras' adapters that are not the objective and not the slide. A C-mount adapter of the wrong factor crops or vignettes the image. The accessory has to name the microscope it fits.
A light microscope forms an image with glass lenses and transmitted or reflected light. A stereo microscope is the lower-magnification instrument for dissecting and for looking at a surface. Fluorescence needs a light source and filters matched to the dye. Histology is the preparation that makes a tissue readable: fixation, a cassette, a section, a stain. The objective's magnification and numerical aperture decide the resolution. The slide and the cover glass decide whether the section sits in the focal plane. Stains and dyes as substances are identified on PubChem. Papers on the methods are on PubMed.
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The category is Microscopy & histology. The sub-category is Microscopy accessories. The catalogue is Instruments de précision.
Shelves beside this one are Microscope slides & cover glasses, Microscope objectives, eyepieces & optics, Histology cassettes & moulds, Counting chambers & haemocytometers, Stereo microscopes, Light & fluorescence microscopes, Histology reagents & consumables, Cold light sources & lighting and Digital & USB microscopes.
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