Classification
Product TypeIngredient
Product FormGlacial (concentrated liquid)
Industry PositionFood additive (acidulant/pH control) and chemical intermediate
Market
Glacial acetic acid (concentrated acetic acid) is used in the United States as a direct food substance affirmed as generally recognized as safe (GRAS) for uses such as curing/pickling, flavor-related functions, and pH control under 21 CFR 184.1005, subject to current good manufacturing practice and Food Chemicals Codex (FCC) specifications. The U.S. is also a major industrial market for acetic acid as a chemical intermediate (e.g., for vinyl acetate monomer and acetate esters), with domestic manufacturing and distribution by large acetyls producers. Because “glacial” material is commonly shipped at high concentration, hazardous materials transport classification and documentation are a central market-access constraint. Temperature management matters in U.S. distribution because acetic acid can solidify near 62°F (about 16–17°C), affecting bulk handling in cold weather.
Market RoleMajor producer and domestic consumer market
Domestic RoleFood additive (GRAS direct food substance under 21 CFR 184.1005) and widely used chemical intermediate in U.S. manufacturing
SeasonalityYear-round industrial production; availability is primarily influenced by plant outages, logistics constraints, and weather-related disruption rather than agricultural seasonality.
Specification
Physical Attributes- Colorless liquid with vinegar-like odor; can form crystals/solid below about 62°F (16–17°C), which can affect unloading and storage in cold conditions.
Compositional Metrics- For food additive use in the U.S., acetic acid is affirmed as GRAS under 21 CFR 184.1005 and must meet Food Chemicals Codex (FCC) specifications (food-grade identity/purity benchmarks).
- For transport, “glacial” acetic acid (or solution >80% by mass) aligns with DOT proper shipping name for UN2789.
Grades- Food grade (FCC-compliant; suitable for GRAS food uses under 21 CFR 184.1005)
- Industrial/technical grade (non-food applications; specifications set by buyer contract)
Packaging- Bulk tank (rail tank car/tank truck/ISO tank) commonly used for U.S. distribution, subject to DOT hazardous materials requirements for UN2789 (>80% acetic acid).
- Non-bulk packages (e.g., drums/IBCs) used for smaller lots, subject to DOT packaging and marking/labeling requirements for corrosive/flammable liquid hazards.
Supply Chain
Value Chain- Feedstocks (e.g., methanol + carbon monoxide) → industrial synthesis (e.g., carbonylation) → purification/distillation → bulk storage → hazmat bulk transport → end-user dilution/formulation and use (food or industrial).
Temperature- Solidifies near 62°F (about 16–17°C); winter logistics may require insulation or heating for bulk tanks to maintain pumpable condition.
Shelf Life- Quality management focuses on maintaining specified concentration and controlling contamination/impurities for food-grade material (typically documented via lot COA against agreed specifications such as FCC).
Freight IntensityMedium
Transport ModeMultimodal
Risks
Hazardous Materials Transport HighGlacial acetic acid shipments (>80% acid by mass) are regulated as UN2789 (Hazard Class 8, Packing Group II; labels include corrosive and flammable liquid). Misclassification, improper packaging/labels, or incorrect shipping papers can cause carrier refusal, customs/terminal delays, or enforcement action, potentially blocking timely delivery.Verify concentration and SDS, use the correct proper shipping name/UN number/packing group, and run a pre-shipment hazmat documentation and packaging compliance check for the intended mode (road/rail/sea).
Regulatory Compliance MediumFor food additive applications, U.S. use is governed by 21 CFR 184.1005 and the regulation references FCC specifications; off-spec quality, impurity concerns, or inadequate documentation can lead to buyer rejection and regulatory escalation.Provide FCC-referenced specifications and lot COAs; maintain supplier qualification/audit trail and change control for manufacturing site, process, and impurity profile.
Customs Compliance MediumImports of chemical substances generally require TSCA section 13 import certification with CBP; incorrect positive/negative certification or unclear product identification can delay release or trigger corrective action.Confirm the appropriate TSCA certification pathway and file the correct statement in ACE via your broker; keep supporting compliance records available for CBP/EPA queries.
Logistics MediumAcetic acid can solidify near 62°F (16–17°C), creating winter unloading and pumpability issues in parts of the U.S. and increasing detention and handling risk in bulk logistics.Plan temperature-managed logistics (insulated/heated equipment when needed) and include temperature/pour-point checks in winter shipping SOPs.
Climate MediumU.S. petrochemical capacity concentration along the Gulf Coast increases exposure to hurricane-driven outages and port/rail disruptions that can constrain supply and delivery schedules.Pre-qualify alternative suppliers and storage points and build contingency inventory ahead of peak Gulf Coast hurricane season when risk tolerance is low.
Labor & Social- Worker safety and exposure management are central due to corrosivity and irritation hazards; U.S. occupational safety programs typically reference OSHA and NIOSH exposure-limit and hazard information for acetic acid.
Standards- Food Chemicals Codex (FCC)
FAQ
Is glacial acetic acid permitted for use in food in the United States?Yes—acetic acid is affirmed by FDA as a direct food substance that is generally recognized as safe (GRAS) under 21 CFR 184.1005, with permitted functions such as curing/pickling, flavor-related uses, and pH control, and it must meet Food Chemicals Codex (FCC) specifications when used in food.
What hazardous materials classification typically applies to shipping glacial acetic acid in the U.S.?For transportation, acetic acid listed as “glacial” (or solutions with more than 80% acid by mass) is identified as UN2789 with Hazard Class 8 (corrosive) and Packing Group II, with labels including corrosive and flammable liquid, per the U.S. DOT hazardous materials table.
Why does temperature control matter for glacial acetic acid logistics in the U.S.?Acetic acid can freeze/solidify around 62°F (about 16–17°C). In cold-weather transport or storage, crystallization can make unloading difficult and may require heated or insulated equipment, which affects scheduling and cost.