Definition
Dangerous goods are substances, materials, or articles that, by their nature or properties, pose a risk to health, safety, property, or the environment when transported, stored, or handled. The term functions primarily as a regulatory and commercial law concept, governing the obligations of carriers, warehousemen, shippers, and consignors who deal with inherently hazardous materials.
In transportation law specifically, dangerous goods are those falling within formally designated hazard classifications — including explosives, flammable liquids, toxic substances, corrosives, oxidizers, radioactive materials, and compressed gases — whose handling, packaging, labeling, and documentation are governed by statutory and regulatory regimes. The shipper's obligation to disclose the dangerous character of goods to the carrier is foundational: a consignor who delivers dangerous goods without adequate notice may be liable for resulting damage regardless of negligence.
Common Language
Modern common usage (Wiktionary): Substances, natural or man-made, which are intrinsically dangerous or otherwise pose a safety hazard. Examples include explosives, poisons, and corrosives.
The common definition is accurate as far as it goes, but it understates the legal significance of the term. In law, "dangerous goods" is not merely a descriptive label for hazardous things — it is a term of art that triggers specific disclosure duties, labeling requirements, and strict or near-strict liability regimes. A researcher encountering the term in legal sources should read it as a status classification with legal consequences attached, not simply a physical description of risk.
Common Confusion
"Dangerous goods" is sometimes used interchangeably with "hazardous materials" (hazmat) in everyday and regulatory contexts, but the terms do not always map identically across legal frameworks. "Dangerous goods" tends to dominate in transportation law, international trade instruments, and older common law sources. "Hazardous materials" is the preferred term in much U.S. domestic regulatory law (particularly under 49 C.F.R. Parts 100–185). Researchers should not assume that a source using one term has the same scope as a source using the other, and historical sources predating modern hazmat classification systems may use "dangerous" more loosely to describe any goods capable of causing injury to persons or property during transit.
Why It Matters in Research
The core legal significance of this term has remained remarkably stable — carriers and warehousemen are entitled to notice when goods are dangerous, and consignors who fail to provide it bear the consequences — but the regulatory architecture surrounding it has expanded enormously. Pre-twentieth-century sources like Rapalje & Lawrence treat dangerous goods almost entirely as a matter of carrier liability and common law duty. Modern research will encounter a dense overlay of international conventions (IMDG Code for sea transport, IATA DGR for air, ADR for road in Europe), domestic statutory regimes, and administrative classification systems that define dangerousness by technical criteria rather than general character.
Researchers working in historical sources should be alert to the fact that early dangerous goods law was built around a short list of paradigm cases — petroleum, gunpowder, nitro-glycerine — while modern law classifies thousands of specific substances. Arguments about what counted as "dangerous goods" at common law may not translate cleanly into modern regulatory categories, and vice versa.
In tort research, the dangerous goods concept connects directly to strict liability for abnormally dangerous activities. Courts evaluating carrier or storage liability for hazardous materials may reason from both the regulatory framework and the common law strict liability tradition. These are analytically distinct but often appear together in the same dispute.
The shipper's duty to warn is a persistent research thread: courts have consistently held that a consignor's failure to disclose the dangerous nature of goods — even without fraudulent intent — can ground liability for resulting harm. This principle appears in nineteenth-century English carrier cases, American common law, and survives into modern statutory frameworks.
Historical Dictionary Support
Rapalje & Lawrence ground the term in the Carriage and Deposit of Dangerous Goods Act, 1866 (29 & 30 Vict. c. 69), which required goods of a dangerous character — with petroleum and nitro-glycerine cited as examples — to be distinctly marked "dangerous" and notified as such to any warehouseman, carrier, railway, or ship receiving them. This statute codified what had already been developing as a common law obligation and represents one of the earliest formal legislative treatments of dangerous goods in the Anglo-American tradition.
What Rapalje & Lawrence do not address — because the modern regulatory state did not yet exist — is the shift from a duty-to-notify framework enforced through private litigation to a comprehensive administrative classification and enforcement system. The 1866 Act's approach (mark it, declare it, let the carrier proceed or refuse) is still recognizable in modern law, but it now sits beneath layers of mandatory technical standards, government inspection authority, and criminal penalties that the historical dictionaries could not anticipate.
No other historical dictionary in the Law Mind corpus provides a dedicated entry for this term, reflecting its primarily statutory and commercial character rather than its belonging to the core conceptual vocabulary of the common law.
Jurisdictional Note
In the United States, dangerous goods in transportation are governed primarily by the Hazardous Materials Transportation Act and implementing regulations in 49 C.F.R. The term "dangerous goods" remains standard in international instruments (IATA, IMDG, ICAO) even where domestic law uses "hazardous materials." Researchers comparing U.S. and international sources should track which definitional framework controls the particular transaction or dispute at issue.
Encyclopedia Cross-Reference
Strict Liability and Abnormally Dangerous Activities — Abnormally Dangerous Activities (Six-Factor Test) (The Law Mind Torts & Personal Injury Encyclopedia)
Premises Liability — Known and Obvious Dangers (The Law Mind Torts & Personal Injury Encyclopedia)