Gypsum (Calcium Sulfate Dihydrate) for Industrial Buyers in Kenya, Uganda, Tanzania, and Rwanda

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Gypsum (Calcium Sulfate Dihydrate)

Gypsum, chemically known as Calcium Sulfate Dihydrate (CaSO4·2H2O), is a naturally occurring mineral used extensively in industrial applications.

Technical Specifications

CAS Number10101-41-4

Chemical FormulaCaSO4·2H2O

AppearanceWhite to off-white crystalline powder or granules

Moisture ContentApproximately 15.6% combined water by weight

PackagingAvailable in bags, bulk bags, or bulk shipment depending on order size

StorageCool, dry, ventilated storage away from moisture

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Safety InformationUse appropriate PPE such as gloves and dust masks to avoid inhalation Store in a dry, well-ventilated area away from moisture Use proper spill-control procedures to prevent dust dispersion — use correct personal protective equipment (PPE) and follow site safety procedures before handling.

Full Product Details

Gypsum (Calcium Sulfate Dihydrate) — Specifications, Uses & Availability

Product Overview

Product NameGypsum (Calcium Sulfate Dihydrate)

CategoryAgricultural Chemicals

AvailabilityIn Stock — Ready for Dispatch

Explore Agricultural Chemicals, browse the full chemical catalogue, or request a quote.

Available Packaging Options

25 kg bags

bulk bags (500 kg or more)

bulk shipment by truck or container

Need a different pack size or bulk tanker delivery? Request a custom quote.

About Gypsum (Calcium Sulfate Dihydrate)

Gypsum, chemically known as Calcium Sulfate Dihydrate (CaSO4·2H2O), is a naturally occurring mineral used extensively in industrial applications. It appears as a white to off-white crystalline powder or granules, typically containing more than 90% of the dihydrate form by weight. Industrial buyers should note that gypsum contains about 15.6% crystal water by weight, contributing to its characteristic hydration properties. Supplied in various package sizes including bags and bulk shipments, gypsum requires storage in cool, dry, and well-ventilated areas to prevent moisture-induced degradation. Due to its mineral composition, it must be kept away from incompatible materials such as strong acids or highly alkaline substances. Standard bulk density values range between 900 and 1200 kg/m³, which should be considered for logistic and handling planning.

External references: PubChem · Wikipedia

Why Gypsum (Calcium Sulfate Dihydrate) Matters

In the construction sector, gypsum is essential for producing plaster materials and drywall that offer fire resistance and smooth surface finishes. Its hydration properties allow controlled setting times, which ensure stability during application and curing phases. Agricultural use of gypsum addresses soil calcium deficiencies and improves soil structure by reducing compaction and ameliorating acidity. This improves nutrient uptake for crops, ultimately enhancing yield and soil health. In cement production, gypsum regulates setting times, thereby preventing flash setting and ensuring effective curing.

Available Types of Gypsum (Calcium Sulfate Dihydrate)

Technical Grade GypsumStandard industrial grade suitable for construction and agricultural applications with typical purity over 90%.

Food Grade GypsumComplies with food safety standards for use as a firming agent and calcium supplement in food and feed.

Applications

Construction plaster productionGypsum hydrates to form a solid matrix that enhances the fire resistance and surface smoothness of plaster used in buildings.

Drywall manufacturingIn drywall panels, gypsum provides critical fire retardancy and dimensional stability for interior construction applications.

Soil amendment in agricultureGypsum supplies calcium and sulfur to deficient soils, helping alleviate compaction and improving crop nutrient availability.

Cement additiveSmall additions of gypsum modify cement setting characteristics, preventing flash setting and enabling controlled hardening.

Concrete formulationIn concrete mixes, gypsum improves workability and facilitates strength development over curing time.

Food processing additiveFood-grade gypsum acts as a firming agent and calcium source in products like tofu and baking powder formulations.

Industrial fillerUsed as a filler in paper and paint products, gypsum enhances texture and processing attributes.

Binder in moldingGypsum binds molding materials in foundries, providing structural integrity and heat resistance for metal casting.

Soil erosion controlApplication of gypsum stabilizes soil aggregates and reduces erosion potential in agricultural fields.

Neutralizing acidic soilsGypsum reacts chemically to improve soil pH balance and reduce aluminum toxicity in acidic soils.

Tile and cement board productionUsed as a raw material in manufacturing tile backer boards and cement boards for enhanced durability.

Phosphate fertilizer productionActs as a component in phosphate fertilizer preparations to supply essential calcium and sulfur nutrients.

Paint and coating formulationsGypsum functions as a pigment extender and rheology modifier in coatings.

Plasterboard joint compoundsImproves setting time and workability in joint compounds used for plasterboard finishing.

Agricultural feed supplementWhen of food grade, gypsum serves as a calcium supplement in animal feeds.

Benefits

Reliable supplyTimely delivery supports continuous industrial operations and production scheduling.

Improved soil productivityEnhances soil structure and fertility, supporting higher crop yields.

Enhanced construction qualityImproves plaster and drywall performance contributing to durable building finishes.

Consistent cement settingPrevents premature hardening, enabling effective processing and finishing.

Fire safety enhancementIncreases fire resistance of building materials, raising safety standards.

Flexible volume ordersSupports small to large-scale industrial needs with adaptable packaging and quantities.

Traceable qualityBatch-specific Certificates of Analysis provide assurance of material properties.

Environmental complianceSuitable for applications that require reduction of soil acidity and erosion.

Multi-sector utilizationApplicable across agriculture, construction, food, and manufacturing industries.

Operational efficiencyConsistent material properties reduce process variability and downtime.

Storage stabilityMaintains quality under recommended storage conditions, minimizing waste.

Technical support availabilityAccess to product application advice supports optimal usage and problem-solving.

Reduced handling risksNon-toxic and stable chemical reduces workplace safety concerns.

Supply chain transparencyDetailed documentation supports regulatory compliance and audits.

Cost managementAccurate specification and consistent quality aid in budgeting and quality control.

Features

High purity gradeContains over 90% calcium sulfate dihydrate to meet industrial standards.

Multiple packaging sizesAvailable in various packaging formats including small bags and bulk shipments.

Consistent particle sizeManufactured to maintain uniform granule or powder size for predictable processing.

Certified material safetySupplied with Material Safety Data Sheet (MSDS) detailing hazards and handling.

Batch traceabilityEach batch can be traced via Certificate of Analysis to ensure quality compliance.

Hydration propertyContains crystal water that enables controlled setting and curing in construction uses.

Chemical stabilityStable under recommended storage conditions without decomposition.

Food-grade option availableSelected batches compliant with food processing standards for human and animal use.

Customizable supply volumesOrders can be adjusted in volume to support different industrial production scales.

Low contamination levelsProcessed to minimize impurities that may interfere with end-use performance.

Non-toxic natureSafe for agricultural and food applications when handled correctly.

Flame retardant effectProvides inherent fire resistance when incorporated in building materials.

Bulk density controlDensity values support optimized logistics and storage planning.

Ease of handlingPhysical form allows straightforward loading, transport, and processing.

Water absorption consistencyReliable water uptake characteristics essential for production repeatability.

Industries Served

Construction materialsGypsum is a key component for plaster, drywall, and cement additives enhancing material properties.

AgricultureUsed to amend soil calcium and sulfur deficiencies, improving soil health and productivity.

Cement manufacturingRegulates cement setting times to improve curing and structural integrity.

Food processingFood-grade gypsum is incorporated as a firming agent and mineral supplement.

Paint and coatingsFunctions as an extender and filler, improving texture and processing characteristics.

Paper manufacturingEmployed as a filler to enhance brightness and surface properties of paper products.

Foundry castingBinds molding materials, providing heat resistance and structural support during metal casting.

Animal feed productionAdded as a calcium source to improve nutritional content of feed formulations.

Phosphate fertilizer productionComponent in formulations supplying calcium and sulfur essential for plant nutrition.

Tile and board manufacturingRaw material for producing durable cement boards and tile backers.

Soil erosion control managementImproves soil aggregate stability to reduce erosion risks on agricultural land.

Chemical industryRaw material for synthesis and formulation processes requiring calcium sulfate.

Joint compound manufacturingEnhances setting characteristics and workability of plasterboard joint compounds.

Mining industryUsed in processing and waste treatment where calcium sulfate properties are utilized.

Water treatmentApplied to adjust water hardness and chemistry through calcium and sulfate supply.

Gypsum (Calcium Sulfate Dihydrate) is supplied by Finstar to industrial buyers across Kenya, Uganda, Tanzania, and Rwanda. Read our chemical safety guides for handling best practices.

Supply in Kenya, Uganda, Tanzania & Rwanda

Finstar, a leading supplier, offers gypsum in multiple pack sizes with COA on request and technical support to streamline your procurement process.

MSDS & Certificate of Analysis available on request
Nairobi warehouse dispatch with East Africa-wide delivery
Technical sales team for formulation & dosage support

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Safety & Handling

Use appropriate PPE such as gloves and dust masks to avoid inhalation Store in a dry, well-ventilated area away from moisture Use proper spill-control procedures to prevent dust dispersion

Always consult the product Safety Data Sheet (SDS) before handling. Contact Finstar for GHS-compliant documentation.

Safe Handling & Storage

Store gypsum in a cool, dry, and well-ventilated area to prevent moisture absorption and caking. Avoid exposure to strong acids and alkalis, which can degrade the material. Use moisture-resistant packaging to preserve quality during storage. Shelf life depends on storage conditions but can be extended by keeping the material sealed and protected from humidity. Follow standard chemical safety procedures including protective equipment during handling. Dispose of waste according to local regulations.

Quality Assurance

Gypsum is supplied with batch-specific Certificates of Analysis on request, providing detailed composition and purity information. Quality control includes verification of chemical purity, moisture content, and physical characteristics aligned with customer specifications.

Frequently Asked Questions

What is the typical purity of gypsum supplied?

The gypsum typically contains over 90% calcium sulfate dihydrate, subject to batch-specific certification.

What packaging options are available?

Gypsum is offered in 25 kg bags, bulk bags of 500 kg or more, and bulk shipments by truck or container.

How should gypsum be stored to maintain quality?

Store in a cool, dry, ventilated area away from moisture and incompatible materials like strong acids.

Is food-grade gypsum available?

Yes, Finstar supplies food-grade gypsum compliant with relevant food safety standards.

What is the bulk density for planning storage?

Typical bulk density ranges between 900 and 1200 kg/m³, aiding logistic planning.

How long can gypsum be stored?

Shelf life depends on storage conditions but can be several months if kept dry and sealed.

Are Certificates of Analysis provided?

Yes, batch-specific COAs are available on request to verify quality and composition.

Can gypsum be used in agriculture?

Yes, gypsum is widely used to amend soils by supplying calcium and sulfur and reducing compaction.

Does gypsum affect the setting time of cement?

Gypsum regulates cement setting time, preventing flash setting and ensuring proper curing.

Is gypsum hazardous to handle?

Gypsum is generally non-toxic but standard handling procedures such as protective equipment are recommended.

What industries use gypsum?

Gypsum is used in construction, agriculture, food processing, cement production, coatings, and other sectors.

How quickly can orders be delivered?

Delivery times depend on order size and location; contact Finstar sales for specific lead times.

Are there different grades of gypsum?

Yes, technical and food-grade variants are supplied depending on application requirements.

Can gypsum be stored near other chemicals?

Avoid storing gypsum near strong acids or alkalis to prevent material degradation.

Is technical support available for product use?

Finstar offers technical support to optimize gypsum application in various industrial processes.

Delivery Coverage Across Kenya’s Counties

Finstar is a leading supplier of industrial chemicals across Kenya’s counties. Gypsum (Calcium Sulfate Dihydrate) is dispatched from our Nairobi Industrial Area warehouse to businesses nationwide — including Nairobi, Mombasa, Kisumu, and Nakuru counties — plus cross-border delivery to Uganda, Tanzania, and Rwanda. Towns we regularly supply include:

NairobiMombasaKisumuNakuruEldoretThikaRuiruKiambuMachakosNaivashaNyeriMeruKerichoKakamegaKitaleMalindiNanyukiAthi RiverVoiKilifi

Delivering to a different town or county? Request a quote and our logistics team will confirm delivery timelines to your location.

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