adr_lookup
Look up ADR 2025 dangerous-goods data by UN number, shipping name, or hazard class. Returns hazard class, packing group, labels, tunnel restrictions, and more for 2,939 European transport entries.
Instructions
Look up European road dangerous-goods (ADR 2025) reference data for a substance: hazard class, classification code, packing group, labels, special provisions, limited/excepted quantities, transport category, tunnel restriction code and Kemler (hazard identification) number. Covers 2,939 entries across all 9 hazard classes, from UNECE ADR 2025 (ECE/TRANS/352).
Provide exactly ONE of: un_number (exact lookup — returns every packing-group variant of that UN number), search (case-insensitive partial match on the proper shipping name), or hazard_class (all entries in a class or division). un_number is normalised — "1203", "UN1203" and "un 1203" are equivalent, and normalized_input reports the correction; explosives keep their leading zero ("0004").
Behavior: read-only reference lookup; name searches return up to 50 entries, class filters up to 100. An unknown UN number or a search with no hits errors with the API's NOT_FOUND body and a retry hint. 28 Table A rows carry a scope remark instead of a packing group: those return packing_group null plus not_subject_to_adr (with conditions_ref, e.g. "5.5.3" for UN 1845 dry ice) or carriage_prohibited, and table_a_remark preserves the verbatim Table A text. Rate-limited (anonymous use: 25 requests/day per IP): a 429 error body carries retry_after_seconds and a Retry-After header — back off and retry, or call get_subscribe_link for higher limits.
Returns: count and results[] — per entry: un_number, proper_shipping_name, class, classification_code, packing_group, labels, special_provisions, limited_quantity, excepted_quantity, transport_category, tunnel_restriction_code, hazard_identification_number, variant_index/variant_count and, on scope-flagged rows, not_subject_to_adr/carriage_prohibited/conditions_ref/table_a_remark — under result, plus confidence, _source and citation (the FreightUtils v1 response envelope).
Limitations: a factual compilation of the ADR table, not legal or compliance advice; classification remains the consignor's responsibility — verify against the current UNECE ADR text.
Related: adr_lq_eq_check (checks quantities against the LQ/EQ values returned here), adr_exemption_calculator (1.1.3.6 small-load points), consignment_calculator (flags dangerous-goods lines by UN number).
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| search | No | Case-insensitive partial match on the proper shipping name (min 2 characters). Example: "acetone". | |
| un_number | No | Exact UN number — 4 digits, optionally "UN"-prefixed; explosives keep their leading zero. Examples: "1203", "UN1203", "0004". | |
| hazard_class | No | All entries in an ADR class or division. Examples: "3" (flammable liquids), "6.1" (toxic), "1.4" (an explosives division). |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| ok | Yes | ||
| result | Yes | ||
| _source | Yes | ||
| citation | Yes | ||
| validity | No | ||
| warnings | No | ||
| confidence | Yes | ||
| blocking_errors | No | ||
| envelope_version | Yes | ||
| normalized_input | No |