Classification
Product TypeIngredient
Product FormLiquid
Industry PositionFood Additive / Food Ingredient (Carrier / Humectant)
Market
Propylene glycol (propane-1,2-diol; INS/E-number 1520) is a globally traded multifunctional food additive used mainly as a carrier/solvent and humectant, with demand linked to processed foods, flavor systems, and additive preparations. In trade statistics it is commonly tracked under HS 2905.32 (HS6: 290532), with significant export capacity evident in Germany, China, the United States, South Korea, and Thailand, and major import demand in India and several large European markets. Market dynamics are shaped by petrochemical feedstock and intermediate availability, plus strict grade and purity expectations for food and especially pharma-linked supply chains. A critical global risk is quality fraud/contamination events (notably ethylene glycol/diethylene glycol contamination and falsified certificates), which has driven tighter incoming-lot testing and supplier qualification requirements.
Market GrowthMixed (recent years (annual trade-statistics view))trade values and unit values can shift materially year-to-year, reflecting petrochemical cycles and regulatory-driven quality requirements
Major Producing Countries- GermanyMajor exporter of HS 290532 in recent UN Comtrade/WITS reporting, indicating significant production and/or re-export capacity.
- ChinaMajor exporter of HS 290532 in recent UN Comtrade/WITS reporting.
- United StatesMajor exporter of HS 290532 in recent UN Comtrade/WITS reporting.
- South KoreaMajor exporter of HS 290532 in recent UN Comtrade/WITS reporting.
- ThailandMajor exporter of HS 290532 in recent UN Comtrade/WITS reporting.
Major Exporting Countries- GermanyTop-tier exporter by reported trade value for HS 290532 (recent UN Comtrade/WITS year views).
- ChinaTop-tier exporter by reported trade value/quantity for HS 290532 (recent UN Comtrade/WITS year views).
- United StatesTop-tier exporter by reported trade value for HS 290532 (recent UN Comtrade/WITS year views).
- South KoreaTop-tier exporter by reported trade value/quantity for HS 290532 (recent UN Comtrade/WITS year views).
- ThailandTop-tier exporter by reported trade value/quantity for HS 290532 (recent UN Comtrade/WITS year views).
Major Importing Countries- IndiaTop-tier importer by reported trade value for HS 290532 (recent UN Comtrade/WITS year views).
- FranceTop-tier importer by reported trade value for HS 290532 (recent UN Comtrade/WITS year views).
- ChinaSignificant importer by reported trade value/quantity for HS 290532 (recent UN Comtrade/WITS year views).
- ItalyTop-tier importer by reported trade value for HS 290532 (recent UN Comtrade/WITS year views).
- TurkiyeTop-tier importer by reported trade value/quantity for HS 290532 (recent UN Comtrade/WITS year views).
Specification
Physical Attributes- Clear, colorless, hygroscopic liquid used as a carrier/solvent and humectant in food additive and flavor preparations
- Identified as propane-1,2-diol / 1,2-propanediol (CAS 57-55-6)
Compositional Metrics- USP-NF monograph: assay/purity expectation of not less than 99.5% propylene glycol (C3H8O2)
- Pharmacopeial risk focus includes limits/testing for ethylene glycol (EG) and diethylene glycol (DEG) as critical contaminants
Grades- Food grade (commonly aligned to Food Chemicals Codex expectations in regulatory references)
- Pharmaceutical/excipient grade (USP/EP labeling is used in market trade; buyers typically require pharmacopeial compliance where pharma-linked supply chains are involved)
- Industrial grade (generally not acceptable for food additive applications without food-grade specification and controls)
Packaging- Bulk liquid shipments (tank truck/ISO tank) for large industrial users and blenders
- Intermediate bulk containers (IBCs) and drums for distributors and mid-scale manufacturers
- Smaller pack sizes for laboratory and specialty use
ProcessingCodex GSFA lists propylene glycol (INS 1520) functional classes including carrier, humectant, emulsifier, and glazing agent, with category-specific maximum levels depending on the food category and use context (direct use vs carry-over).
Supply Chain
Value Chain- Petrochemical feedstocks/intermediates → chemical synthesis and purification → grade qualification (food/pharma specs) → bulk storage and transport → regional distributors/repackers → food additive/flavor formulators and food manufacturers
- Incoming-lot verification (identity, purity, EG/DEG screening where required) → controlled storage to limit water uptake/contamination → use as carrier/solvent/humectant within permitted applications and limits
Demand Drivers- Use as a carrier/solvent for flavors, colors, and certain additive preparations, supporting formulation uniformity and dosing
- Use as a humectant in selected processed food categories permitted by regulations/standards
- Compliance-driven purchasing behavior favoring verified food/pharmacopeial grades and robust certificates of analysis
Temperature- Typically handled and shipped as an ambient liquid chemical; storage in tightly closed containers is important due to hygroscopicity and contamination risk management
Shelf Life- Generally considered chemically stable under recommended ambient storage in sealed containers; commercial shelf-life is supplier- and packaging-dependent and should be confirmed via product-specific COA/SDS.
Risks
Food Safety HighQuality fraud and contamination risk (notably ethylene glycol/diethylene glycol contamination and falsified USP/EP-labeled materials) can create severe human-health hazards and immediate trade/recall disruptions; WHO has issued alerts specifically on falsified propylene glycol contaminated with ethylene glycol.Qualify suppliers, require authenticated COAs and traceability, and test incoming lots (including EG/DEG) per risk-based GMP/quality systems before use in food/pharma-adjacent applications.
Regulatory Compliance MediumPermitted uses and maximum levels vary by jurisdiction and by whether propylene glycol is used directly or as a carrier with carry-over limits (e.g., EU carrier provisions for E 1520 in Annex III with specific maximum carry-over levels for certain additive groups).Map each application to the destination-market rule set (EU/FDA/Codex-aligned standards as relevant), document intended function (carrier vs direct additive), and ensure labeling and use-level compliance.
Supply Chain Disruption MediumSupply availability and pricing can be exposed to petrochemical chain volatility, plant outages, and regional logistics constraints; this can tighten availability of qualified food/pharmacopeial grades even when industrial material remains available.Dual-source qualified grades across regions, maintain safety stocks for critical formulations, and align procurement specifications (food/FCC/USP) early to avoid emergency substitutions.
Sustainability- Dependence on petrochemical value chains and energy inputs (scope and footprint depend on production route and regional energy mix)
- Growing interest in traceability and lower-impact alternatives in some end-user segments, but food-additive adoption remains governed by regulatory permissions and specifications
Labor & Social- Process safety and worker health protections in upstream petrochemical/chemical manufacturing and bulk logistics operations
- Supply-chain integrity and documentation controls to prevent falsified materials and fraudulent certificates entering regulated uses
FAQ
What HS code is commonly used to track propylene glycol in global trade statistics?Propylene glycol (propane-1,2-diol) is commonly tracked under HS 2905.32 (HS6: 290532) in UN Comtrade-derived trade statistics and related tools such as World Bank WITS and ITC Trade Map.
How is propylene glycol regulated as a food additive in major standards and jurisdictions?Codex GSFA lists propylene glycol (INS 1520) with defined functional classes and category-specific maximum levels, while the EU lists E 1520 in its additives framework (including Annex III carrier provisions with specified conditions). In the United States, 21 CFR § 184.1666 affirms propylene glycol as generally recognized as safe (GRAS) for specified functions under current good manufacturing practice, with category maximum levels described in the regulation.
What is the most critical global safety risk for propylene glycol supply chains used in regulated applications?The most critical risk is quality fraud and contamination, including cases of falsified propylene glycol contaminated with ethylene glycol and concerns about diethylene glycol/ethylene glycol contaminants. WHO has issued medical product alerts on falsified USP/EP propylene glycol and advises strong supplier qualification and testing of incoming raw materials.
Which countries are major exporters and importers of propylene glycol in recent trade data?In recent UN Comtrade-derived WITS views for HS 290532, major exporters include Germany, China, the United States, South Korea, and Thailand, while major importers include India, France, China, Italy, and Türkiye.