NA identification number

NA9269: Trimethoxysilane

NA9269 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 6.1, packing group I.

ID numberNA9269

Hazard class6.1

Packing groupI

Label codes6.1, 3

All §172.101 entries for NA9269

Proper shipping name	Class	PG	Labels
Trimethoxysilane	6.1	I	6.1, 3

Open any entry for packaging sections, special provisions, air limits and vessel stowage.

What it means

6.1

Class 6.1 — Poisonous (toxic) material. Materials, other than gases, that are toxic to humans if swallowed, inhaled, or absorbed through skin.

Packing group ranks danger within the class: PG I = great danger.

Label codes (column 6): 6.1, 3 → Poison / Toxic label + subsidiary Flammable liquid label.

NA numbers are North-America-only identification numbers — not recognized for international transport except to and from Canada.

Example basic description

NA9269, Trimethoxysilane, 6.1, PG I

Proper shipping name shown without the table's italic descriptive text. Order per §172.202: ID number, proper shipping name, hazard class, packing group. Example only — add technical names, “RQ”, quantities and other elements your shipment requires.

What to check next

Match the name. Compare your SDS Section 14 to the proper shipping names above and pick the row with your packing group.
Read the special provisions on the entry page (§172.102) — they can add limits or exceptions.
Check packaging — the entry page lists the Part 173 sections for exceptions, non-bulk and bulk.
Labels & placards. Placarding depends on class and quantity — see Table 1 vs Table 2.
Emergency response. Find the response guide for NA9269 in the current PHMSA Emergency Response Guidebook.

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Common questions about NA9269

What is NA9269?

NA9269 is the identification number for Trimethoxysilane in the DOT Hazardous Materials Table (49 CFR §172.101).

What hazard class is NA9269?

NA9269 is listed under hazard class 6.1 (poisonous (toxic) material).

What packing group is NA9269?

Packing group for NA9269: I. Where several rows exist, the packing group that fits your material decides which row applies.

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← NA9264 All UN numbers All Class 6.1 materials

Source: Hazardous Materials Table (49 CFR §172.101), eCFR.gov — current as of Oct 23, 2026. View the official table. Reference only — verify current requirements before shipping.