How to use Calcium sulfate in Industrial Chemicals without hitting the usual pitfalls
Most Calcium sulfate (CAS 7778-18-9) enquiries in our Industrial Chemicals work come down to the same question: can this batch actually hold up in my process? We rarely answer yes or no straight away — we start from your conditions and work back to the specs. That's the angle on this page.
What it does in the system
What actually decides the result is not a single number.Industrially, the value of Calcium sulfate (CAS 7778-18-9) is rarely on the spec sheet — it is whether it stably meets your process window. In Industrial Chemicals, its purity, impurity profile and batch consistency usually matter more than a single 'assay' number, because what really moves the finished result is often the ignored impurities and physical properties. Comparable grades:
- Calcium Hydroxide (CAS 1305-62-0)：a comparable grade often evaluated alongside。
- Calcium perphosphate,ammonified,granular (CAS 7757-93-9)：a comparable grade often evaluated alongside。
- tripotassium citrate anhydrous (CAS 7778-49-6)：a comparable grade often evaluated alongside。
- Potassium carbonate (CAS 584-08-7)：a comparable grade often evaluated alongside。
- dl-lactic acid sodium salt (CAS 72-17-3)：a comparable grade often evaluated alongside。
- disodium malate (CAS 676-46-0)：a comparable grade often evaluated alongside。
- Gluconic acid, sodium salt (CAS 527-07-1)：a comparable grade often evaluated alongside。
- Sodium dihydrogen citrate Anhydrous (CAS 18996-35-5)：a comparable grade often evaluated alongside。
Basic specifications
| Name | Calcium sulfate |
|---|---|
| English name | Calcium sulfate |
| CAS No. | 7778-18-9 |
| Formula | CaSO4 |
| Molecular weight | 136.14 g/mol |
| Applications | Industrial Chemicals |
| Standard purity | per batch COA |
| Packaging | confirmed per order |
| Storage | keep sealed in a cool, dry place |
Figures above are published / typical information; final values follow the batch COA and order confirmation.
Key physical data: molecular formula CaSO4, molecular weight 136.14 g/mol, CAS 7778-18-9, melting point 1450 °C. These are published physical properties; purity and packaging follow the batch COA and order confirmation.
Key selection dimensions
If I had to pick one, it'd be: Define the end use and process window first, then work back to required purity and impurity limits — not the other way around.
Check compatibility with other materials in the system; run a trial when unsure.
Match packaging and feeding method to on-site equipment so the material is usable on arrival.
Retain samples of critical lots and run third-party checks; do not rely on the supplier COA alone.
The easiest things to miss
- Comparing price but not impurity profile: same assay with different impurities can yield wildly different results.
- Skipping samples and scaling up: going straight to volume most often fails on compatibility.
- Ignoring transport and storage: most 'arrived-dead' cases trace back to loose handling.
Q&A
Where is Calcium sulfate mainly used?
Mostly in Industrial Chemicals-related processes and formulations; the exact use depends on the finished product and process requirements.
How do I judge whether the specification fits?
State the use, process window and critical limits so the supplier can recommend a grade; when unsure, validate with a trial first.
Which quality documents come with Calcium sulfate?
A COA per batch, with MSDS / technical data sheet and third-party tests available on request; tell us at enquiry if a specific standard must be met.
Comparable grades
- Calcium perphosphate,ammonified,granular (CAS 7757-93-9)
- tripotassium citrate anhydrous (CAS 7778-49-6)
- Potassium carbonate (CAS 584-08-7)
- dl-lactic acid sodium salt (CAS 72-17-3)
- disodium malate (CAS 676-46-0)
- Gluconic acid, sodium salt (CAS 527-07-1)
See site search for Calcium sulfate or browse the Organic Chemicals directory.
How to get files & a quote
Jinan Shenghe Chemical Co., Ltd. supplies chemical raw materials and fine chemicals; a COA ships with every batch, with MSDS and technical data sheets available on request. In your enquiry include product name, CAS, target purity and packaging, and we will provide documents and a quote to the relevant standard.
Contact: info@591daili.com | +86-18553102138
Note: This page is for industrial raw-material technical discussion only. Products are supplied for industrial and research use, not for consumer or medical use. Drinking-water, food, cosmetic or pharmaceutical applications must meet applicable regulations and customer standards; specifications, compliance documents and transport requirements follow the batch COA and order confirmation.