Four grades, one supplier
Filter, granular, calcined insulation and agro grades from our Gujarat operations, so buyers can consolidate diatomaceous earth sourcing for several plants or product lines.
Industrial Mineral
Diatomaceous Earth — Manufacturer & Exporter from India
Porous, low-density amorphous silica for filtration, adsorption, thermal insulation and agricultural formulations, supplied in four grades with a Technical Data Sheet and batch CoA.
Filter GradeGranular GradeCalcined GradeAgro GradeSurface-Treated Grade
ISO 9001 certified processes
NABL-accredited lab testing
CoA, TDS & MSDS with every shipment
Export packaging worldwide
Overview
What is Diatomaceous Earth?
Diatomaceous earth (DE), also called diatomite, is a soft siliceous sedimentary rock formed from the fossilised cell walls of diatoms, microscopic single-celled algae. Each particle is a fragment of a skeleton made of amorphous hydrated silica, perforated with fine pores. That structure gives the mineral a high porosity, a large specific surface area and a very low bulk density compared with most industrial fillers.
Processing determines how the material behaves in use. Raw diatomite is crushed, dried and milled, then classified to control the particle size distribution. Selected grades are calcined at high temperature, which sinters the finest particles, lowers moisture and organic content, and improves permeability and thermal stability. Granular grades are sized by screening rather than fine milling, so that the porous particles stay intact for absorbent and carrier duties.
Because the silica skeleton is rigid and chemically inert, diatomaceous earth builds an open, incompressible filter cake that traps fine solids while letting liquid pass. The same pore volume lets it hold oils and liquids, carry active ingredients and act as an anti-caking agent. In calcined form it serves as a lightweight insulating raw material, and fine grades are used as a flatting extender in paints and coatings.
Obsidian Minerals manufactures diatomaceous earth in Gujarat, India, under ISO 9001 certified processes, with testing carried out in an NABL-accredited laboratory. We supply Filter, Granular, Insulation and Agro grades in 25 kg and 50 kg bags or 1 MT and 1.2 MT jumbo bags. Each shipment carries an SDS, Technical Data Sheet and batch Certificate of Analysis. Samples are available on request, and particle size or permeability can be adjusted to suit your process.
Diatomaceous Earth grades
Select a grade for its typical properties, applications, usage guidance and FAQs.
Diatomaceous Earth
Filter Grade DE
A graded diatomite filter aid that builds an open, incompressible cake for clear filtrate at practical flow rates.
Filtration Diatomaceous EarthGranular Grade DE
Screened diatomite granules that absorb oils and liquids while staying free-flowing, firm and easy to handle.
Adsorption Diatomaceous EarthInsulation Grade DE
Calcined diatomite with low density and stable porosity for insulating bricks, boards and high-temperature backup layers.
Thermal Resistance Diatomaceous EarthAgro Grade DE
Fine, uncalcined amorphous diatomite for carrier, anti-caking and mechanical insect-control formulations, subject to local registration.
Pest Control| Grade | Specification | Primary use | Link |
|---|---|---|---|
| Filter Grade Diatomaceous Earth | On TDS | Filtration | Specs |
| Granular Grade Diatomaceous Earth | On TDS | Adsorption | Specs |
| Calcined Insulation Grade Diatomaceous Earth | Calcined | Thermal Resistance | Specs |
| Agro Grade Diatomaceous Earth | On TDS | Pest Control | Specs |
From deposit to dispatch
- 01
Selective mining and sorting
- 02
Crushing and drying
- 03
Milling and air classification
- 04
Calcination for selected grades
- 05
QC testing and packing
Why source Diatomaceous Earth from Obsidian Minerals
Tested in an accredited lab
Batches are checked in an NABL-accredited laboratory and shipped with a Certificate of Analysis, giving QC teams documented data for incoming inspection.
Sized to your process
Particle size, permeability class and packing format can be developed with you, from 25 kg bags to 1.2 MT jumbo bags.
Where Diatomaceous Earth is used
Diatomaceous Earth — frequently asked questions
What is diatomaceous earth used for in industry?
Diatomaceous earth is used mainly as a filter aid for liquids such as edible oils, syrups, chemicals and water. It is also used as an absorbent, a carrier and anti-caking agent, a lightweight insulating raw material, and a flatting extender in paints. The porous, inert silica structure is what makes it useful across these different roles.
What is the difference between natural and calcined diatomaceous earth?
Natural diatomaceous earth is dried and milled without high-temperature treatment, so it keeps its original amorphous structure and finer pores. Calcined diatomaceous earth is heated in a kiln, which reduces moisture and organic matter, increases particle size through sintering and improves thermal stability. Calcination can also convert part of the silica to a crystalline form, which is reported on the SDS.
Which diatomaceous earth grades does Obsidian Minerals supply?
We supply four grades: Filter Grade for solid–liquid separation, Granular Grade for adsorption and carrier use, Insulation Grade, which is calcined for thermal resistance, and Agro Grade for agricultural formulations. Custom particle sizes and permeability classes can be developed on request. Each grade has its own Technical Data Sheet with typical values.
Is diatomaceous earth safe to handle?
Diatomaceous earth is chemically inert, but like any fine mineral powder it can create dust. Handling guidance, exposure controls and the crystalline silica content of each grade are given in the Safety Data Sheet supplied with every shipment. We recommend local exhaust ventilation and suitable respiratory protection when handling dry powder.
How is diatomaceous earth packed for export?
Standard packing is 25 kg or 50 kg HDPE or paper bags, and 1 MT or 1.2 MT jumbo bags for bulk users. Because the material has a low bulk density, bag volume is larger than for most minerals of the same weight. Custom and private-label packaging is available on request.
How do I order diatomaceous earth samples or a quotation?
Send us your application, the grade or particle size you need, your expected annual volume and the destination country. We will recommend a grade, share the Technical Data Sheet and arrange a sample for evaluation. Commercial terms are quoted once the specification is agreed.
What packaging options are available for Diatomaceous Earth?
Standard export packing is 25 kg or 50 kg HDPE / paper bags and 1 MT or 1.2 MT jumbo (FIBC) bags, palletised and shrink-wrapped on request. Custom and private-label packaging can be arranged for volume orders.
Do you provide MSDS and technical datasheets?
Yes. A Technical Data Sheet and MSDS are available for every grade, and each shipment is accompanied by a batch-specific Certificate of Analysis.
Request a quote
Interested in Diatomaceous Earth?
Tell us your application, preferred grade and volume. Our engineering team will recommend the right grade and send a datasheet, sample and quotation.
- Technical Data Sheet & MSDS
- Samples for qualification trials
- Bulk and recurring supply pricing