Classification
Product TypeIngredient
Product FormPowder (food-grade calcium sulfate; anhydrous or dihydrate)
Industry PositionFood additive / food ingredient (direct addition; GRAS-listed in U.S. regulation)
Market
Calcium sulfate is a regulated food ingredient in the United States and is affirmed as a direct food substance that is generally recognized as safe (GRAS) under 21 CFR 184.1230 when meeting Food Chemicals Codex (FCC) specifications and used consistent with GMP. In the U.S. market it is used across multiple technical functions (e.g., anticaking/free-flow aid, dough/flour treatment uses, firming/texturizing, nutrient supplement), so demand is primarily B2B from food manufacturers and ingredient blenders. Supply is available year-round because it is mineral/industrial production-based rather than seasonal agriculture. The key U.S. market differentiator is buyer and regulator emphasis on food-grade identity/purity documentation (e.g., FCC-aligned specifications and COAs) versus industrial-grade material.
Market RoleLarge domestic consumer market with domestic supply and import supplementation
Domestic RoleFunctional food additive/ingredient used across multiple U.S. processed-food categories under FDA GMP limits
Market GrowthNot Mentioned
SeasonalityYear-round availability; not harvest-season dependent because production is based on mineral sourcing and industrial processing.
Specification
Physical Attributes- Fine, white to slightly yellow-white, odorless powder (anhydrous CaSO4 or hydrated CaSO4·2H2O) is described in 21 CFR 184.1230.
Compositional Metrics- Conformity to FCC monograph tests/specifications for identity, assay, and impurities is a common buyer baseline for 'food grade' ingredient qualification in the U.S.
Grades- Food grade (FCC-referenced; suitable for direct addition to food under 21 CFR 184.1230)
- Industrial/construction grades (not suitable for food use without food-grade conformity and documentation)
Packaging- Moisture-protective packaging with lot identification and COA linkage is typically required for powder handling and traceability in U.S. ingredient supply chains.
Supply Chain
Value Chain- Mineral sourcing (gypsum/anhydrite) or chemical production stream → purification/processing to food grade → milling/classification → QA testing vs FCC-aligned specs → packaging (lot coded) → ingredient distributor/importer → food manufacturer formulation use
Shelf Life- Quality risk is primarily moisture exposure and contamination/adulteration rather than perishability; handling focuses on keeping material dry and segregated from non-food-grade dust/streams.
Freight IntensityHigh
Transport ModeMultimodal
Risks
Regulatory Compliance HighU.S. market access can be blocked if calcium sulfate intended for food use is not demonstrably compliant with FDA’s regulatory status and conditions of use (21 CFR 184.1230) and does not meet food-grade identity/purity expectations (FCC-referenced specifications). Industrial-grade or contaminated material misrepresented as food grade can lead to detention, refusal, and downstream recalls.Qualify only approved food-grade suppliers; require COA aligned to FCC expectations; verify intended technical function and GMP use levels vs 21 CFR 184.1230; implement incoming testing and robust segregation from non-food-grade materials.
Food Safety MediumMineral/byproduct source risk: calcium sulfate derived from unsuitable industrial byproduct streams can carry elevated impurities; U.S. stakeholders treat phosphogypsum as a regulated radioactive byproduct under EPA rules, making upstream source verification and impurity controls critical for food ingredient supply chains.Document raw-material origin (natural gypsum/anhydrite vs industrial byproduct); apply supplier audits; perform risk-based testing for elemental impurities and other contaminants; require explicit exclusion of phosphogypsum-derived inputs for food-grade supply unless fully validated and permitted.
Logistics MediumBulk-to-value logistics exposure: freight rate volatility and handling disruptions can materially affect delivered costs and availability for U.S. plants, especially for long-haul lanes and import routes.Use multi-region inventory buffers, dual sourcing (domestic + import), and long-term freight/warehousing contracts where feasible.
Documentation Gap MediumImport entry errors (e.g., inadequate or inaccurate FDA Prior Notice data) can result in refusal/holding actions at the U.S. port of entry for food ingredient shipments.Standardize entry data templates, validate product identity/CAS and manufacturer details, and run pre-departure checks with the broker against FDA Prior Notice requirements.
Sustainability- Mining and quarrying impacts (land use, dust, water management) linked to gypsum/anhydrite sourcing for calcium sulfate supply chains
- Waste/byproduct stream risk screening to avoid unsuitable industrial sources entering food ingredient channels
Labor & Social- Worker safety in mining and mineral processing (dust exposure control, industrial hygiene, contractor safety management)
- Labor compliance audits for upstream extraction and downstream processing sites supplying U.S. food ingredient buyers
Standards- HACCP-based food safety programs
- GFSI-benchmarked certification schemes (buyer-driven), such as FSSC 22000, BRCGS, SQF, or IFS
FAQ
Is calcium sulfate permitted for use as a food ingredient in the United States?Yes. Calcium sulfate is affirmed as a direct food substance that is generally recognized as safe (GRAS) in U.S. regulation at 21 CFR 184.1230, when it meets referenced Food Chemicals Codex (FCC) specifications and is used consistent with good manufacturing practice (GMP).
What technical functions are recognized for calcium sulfate in foods under U.S. regulatory references?FDA’s Substances Added to Food inventory and 21 CFR 184.1230 describe calcium sulfate uses spanning multiple technical effects, including anticaking/free-flow aid and drying/formulation uses, dough/flour-related functions, firming/texturizing and stabilizing uses, pH control, and nutrient supplement applications, subject to GMP conditions.
For imported food-grade calcium sulfate, what U.S. import compliance step is commonly required before arrival?FDA generally requires Prior Notice for food shipments imported or offered for import into the United States, submitted electronically before arrival. Inadequate prior notice can trigger FDA/CBP actions such as refusal or holding at the port of entry.