Description
Silica gel 35 is a chromatography-grade silicon dioxide sorbent with particle size 0,04–0,063 mm (230–400 mesh), CAS number 7631-86-9 and empirical formula SiO₂. It has a molar mass of 60,09 g/mol and a density in the range 2,1 to 2,2 g/cm³, supporting consistent column packing and method calculation. The defined mesh range from manufacturer Carl ROTH suits flash and gravity chromatography, purification of organic intermediates and related laboratory separations. With EG number 231-545-4, the sorbent is clearly identified for inventory, safety documentation and method transfer. Fine 230–400 mesh particles provide a practical balance of resolution and flow for many routine chromatographic protocols. Laboratories select silica gel 35 when reproducible particle-size distribution, established CAS identity and reliable bulk packing behaviour are required for day-to-day purification and analytical sample clean-up workflows.
This article is part of Sorbents, silica gel & ion exchangers, in SPE & sample preparation.
Key features
- Appearance: white powder
- Pore diameter: 25-40 Å
- Loss on drying (160 °C): ≤6 %
- Pore volume (N2): 0,5-0,7 ml/g
- Specific surface: ≥550 m2/g
- pH-value: 4,5-6,5
- Volatile parts (950 °C): ≤13,0 %
- SiO2 content (dry substance): ≥99,4 %
- Fe2O3 content (dry substance): ≤0,014 %
- Na2O content (dry substance): ≤0,15 %
- CAS number: 7631-86-9
- Pack sizes: 250 g, 500 g, 1 kg, 2.5 kg
- EG nr.: 231-545-4
- Empirical formula: SiO₂
- Molar mass: 60,09 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Silica gel 35, 0,04-0,063 mm (230-400 mesh), 250 g, plastic
What is this article?
Silica gel 35, 0,04-0,063 mm (230-400 mesh), 250 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Sorbents, silica gel & ion exchangers, inside SPE & sample preparation, in Chromatography equipment.
Loose sorbent, silica gel and ion-exchange resin are the phases bought in bulk to pack a column or to stir into a solution. Particle size and activity, or the ion-exchange capacity, are the specification. A TLC silica and a flash silica of different particle sizes are not the same separation.
Solid-phase extraction holds a compound on a sorbent while the rest of the sample is washed away, then releases it in a small volume. The sorbent, the bed mass and the solvents are the method. Silica, ion exchangers and polymer phases do different jobs. A flash column is the same idea scaled toward purification rather than trace cleanup. The molecules are on PubChem, named by IUPAC.
Which category should I open next?
The category is SPE & sample preparation. The sub-category is Sorbents, silica gel & ion exchangers. The catalogue is Chromatography equipment.
Shelves beside this one are SPE cartridges & columns and Flash, empty & glass chromatography columns.
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.
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