{"data":{"id":"us/49-cfr-172.558","jurisdiction":"us","citation":"49 CFR 172.558","heading":"CORROSIVE placard.","body":"(a) Except for size and color, the CORROSIVE placard must be as follows:\n(b) In addition to complying with § 172.519, the background color on the CORROSIVE placard must be black in the lower portion with a white triangle in the upper portion. The base of the white triangle must be 38 mm ±5 mm (1.5 inches ±0.2 inches) above the placard horizontal center line. The text and class number must be white. The symbol and inner border must be black.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS","PART 172—HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, TRAINING REQUIREMENTS, AND SECURITY PLANS","Subpart F—Placarding"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"b9b29015bac0216508bd114818de9d0b339a34f2578426cef0f16d4a18d451af","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-172.556","next":"us/49-cfr-172.560"},"notice":"GroundRules: Original legal text. Not legal advice."}