ERG 2024 Green pages · Table 1. Pick a material, spill size, and time of day. The isolation radius (m) and downwind protection distance (km) update in the URL for sharing.
UN1196 · Small spill (≤ 208 L) · Day
Same TIH gas is also released by: UN1162 Dimethyldichlorosilane, UN1183 Ethyldichlorosilane, UN1242 Methyldichlorosilane, UN1250 Methyltrichlorosilane, UN1295 Trichlorosilane, UN1298 Trimethylchlorosilane
Emergency-response content is drawn from the 2024 Emergency Response Guidebook (ERG), a joint publication of PHMSA, Transport Canada, and Mexico’s SCT.
The U.S. edition of the ERG and all U.S. federal regulations are public-domain works under 17 U.S.C. §105. Descriptions on this page are plain-English paraphrases; for any compliance decision, consult the authoritative text on eCFR Title 49 and the ERG at PHMSA.dot.gov. “ERG™” is attributed to PHMSA / Transport Canada / SCT and used nominatively.