Calcium Sulphate Anhydrous
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Product Code : SCL-LC-12267
Calcium Sulphate Anhydrous (SKU SCL-LC-12267) is the water-free form of calcium sulphate, CaSO4, used in supervised chemistry practicals on sulphate salts, hydrates and drying behaviour, and for controlled reagent preparation. It suits lessons that compare gypsum, Plaster of Paris and the anhydrous salt in schools, colleges and science departments. Science Lab Supplies in Ambala, India prepares quotations for it for schools, colleges, training institutes, tender contractors and distributors.
Specifications
Formula, hydration state, handling and storage details for anhydrous calcium sulphate appear row by row below. In short, it is CaSO4 (CAS 7778-18-9), distinct from gypsum, the dihydrate, and from Plaster of Paris, the hemihydrate; grade, assay, particle form and pack size are stated on the batch label and quotation.
| Specification | Value |
|---|---|
| SKU | SCL-LC-12267 |
| Other names | Anhydrous calcium sulfate, calcium sulfate anhydrous |
| Formula | CaSO4 |
| CAS number | 7778-18-9 |
| Hydration state | Anhydrous (water-free) |
| Not to be confused with | Gypsum (dihydrate), Plaster of Paris (hemihydrate) |
| Chemical class | Inorganic calcium sulphate salt |
| Product group | Inorganic chemicals / chemistry lab reagents |
| Precautions | Avoid inhaling dust and contact with eyes; no mixing with unknown chemicals |
| Protective equipment | Lab coat, gloves, eye protection |
| Dispensing | Clean, dry spatula or weighing tool |
| Storage | Tightly closed in a cool, dry, ventilated chemical store, away from moisture |
| Waste | Institutional chemical-waste rules |
| Not for | Household or construction use |
| Pack contents | 1 pack of anhydrous calcium sulphate |
| Documents | Safety Data Sheet, batch label, shelf-life detail, transport documents |
| Grade, assay, particle form and pack size | Confirmed on the label and quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Calcium Sulphate Anhydrous
The anhydrous salt is a clear teaching example of water of crystallisation: set beside gypsum and Plaster of Paris, it shows how the same compound changes with its water content. It also suits supervised drying-agent or moisture demonstrations, where the SOP permits, and general sulphate-salt lessons.
- Class 10 science: acids, bases and salts, comparing gypsum, Plaster of Paris and anhydrous calcium sulphate.
- Class 11–12 chemistry: calcium compounds and hydrated versus anhydrous salts.
- Drying-agent and moisture demonstrations where the SOP allows it, weighing the salt out with a clean, dry Spatula.
- Recording observations on sulphate salts in practical files.
Standard Scope of Supply
One pack of anhydrous calcium sulphate is supplied per unit, in the quantity shown on the quotation, labelled with batch, hydration state and hazard details and sent with its Safety Data Sheet and transport documents. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Packing, MOQ and Lead Time
From a single pack for one school to a stock for many labs, any quantity can be quoted, and the quotation gives packing, delivery time and price for it. Other school chemistry lab equipment in India can go on the same quotation, so a full practical list can be priced at once.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Rwanda, South Africa, Qatar, Sri Lanka, Vietnam and Malaysia. Pricing for this salt can be requested on the contact page or by adding it to the enquiry cart, and the lab tender page explains tender purchases.
Frequently Asked Questions
Is calcium sulphate anhydrous the same as gypsum?
No. Gypsum is calcium sulphate dihydrate and Plaster of Paris is the hemihydrate, while this product is the water-free form, CaSO4. The label confirms the hydration state of each batch.
Is it safe for school chemistry labs?
Yes, in supervised school and college labs. Avoid breathing the dust, for which Protective Masks can be quoted, keep it out of the eyes with Safety Glasses, store it in labelled containers and never mix it with unknown chemicals.
Who supplies the Calcium Sulphate Anhydrous?
Science Lab Supplies, a laboratory chemicals supplier in India working from Ambala, supplies it. School, college and distributor quotations name the grade, particle form and pack size of the anhydrous salt on offer.
How should it be stored?
Keep the pack tightly closed in a cool, dry, ventilated chemical store and away from moisture, so the salt stays anhydrous for experiments that need it.
Related Calcium Salts, Sulphates and Grinding Ware
Lessons on salts, hydrates and drying agents draw on a few related compounds. These Lab Chemicals extend the practical to other calcium salts, sulphates and the sulphate test, while a porcelain mortar handles grinding; all of them can be ordered on one quotation.
- Calcium Chloride Fused (CaCl2) — hygroscopic calcium salt, CaCl2 (CAS 10043-52-4), for drying and desiccation work.
- Calcium Hydroxide — alkaline reagent for limewater preparation and carbon dioxide testing.
- Sodium Sulphate — odourless white sodium salt for sulphate salt studies.
- Copper Sulphate Blue Crystal — copper(II) sulfate reagent for hydration, crystallisation and qualitative analysis.
- Barium Sulphate — white or yellowish odourless powder, BaSO4 (CAS 7727-43-7), for inorganic salt studies.
- Barium Chloride — barium salt for sulfate-ion testing and precipitation reactions.
- Porcelain Mortar and Pestle — 80 mm white porcelain mortar with pestle for grinding and mixing.
Browse the full Lab Chemicals range, the Chemistry Lab range, or all school lab equipment.
Last updated: 22 October 2026
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