NA1955: Organic phosphate
As listed: Organic phosphate, mixed with compressed gas or Organic phosphate compound, mixed with compressed gas or Organic phosphorus compound, mixed with compressed gas
NA1955 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 2.3.
All §172.101 entries for NA1955
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Organic phosphate, mixed with compressed gas or Organic phosphate compound, mixed with compressed gas or Organic phosphorus compound, mixed with compressed gas | 2.3 | — | 2.3 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Label codes (column 6): 2.3 → Poison gas label.
NA numbers are North-America-only identification numbers — not recognized for international transport except to and from Canada.
Example basic description
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 NA1955 in the current PHMSA Emergency Response Guidebook.
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Common questions about NA1955
What is NA1955?
NA1955 is the identification number for Organic phosphate, mixed with compressed gas or Organic phosphate compound, mixed with compressed gas or Organic phosphorus compound, mixed with compressed gas in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is NA1955?
NA1955 is listed under hazard class 2.3 (poisonous (toxic) gas).
What packing group is NA1955?
Packing group for NA1955: not assigned. Where several rows exist, the packing group that fits your material decides which row applies.