HazMat Tool — substance information

Ethyl phosphonous dichloride, anhydrous pyrophoric liquid

HMT May 2026
UN / ID
NA 2845
Hazard class
6.1
Packing group
I (multiple — see tabs)
ERG guide
Special provisions
SP 2, SP B9, SP B14, SP B32, SP T20, SP TP4, SP TP12, SP TP13, more…
Source
49 CFR §172 (2026/05)

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Ethyl phosphonous dichloride, anhydrous pyrophoric liquid

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

NA 2845

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) Spontaneously combustible materials (4.2)

(1) Symbols Help


This entry is signed with "D". The letter "D" identifies proper shipping names which are appropriate for describing materials for domestic transportation but may be inappropriate for international transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate proper shipping name may be selected when either domestic or international transportation is involved.

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
2
B9
B14
B32
T20
TP4
TP12
TP13
TP38
TP45

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk227see 49 CFR §173.227
(8C) Bulk244see 49 CFR §173.244

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

NA 2845

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) Spontaneously combustible materials (4.2)

(1) Symbols Help


This entry is signed with "D". The letter "D" identifies proper shipping names which are appropriate for describing materials for domestic transportation but may be inappropriate for international transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate proper shipping name may be selected when either domestic or international transportation is involved.

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
2
B9
B14
B16
B32
T20
TP4
TP12
TP13
TP38
TP45

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk227see 49 CFR §173.227
(8C) Bulk244see 49 CFR §173.244

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(10) Vessel stowage Help

(10A) Location
(10B) Other

Packing group comparison

Multiple packing groups apply to this entry. See assignment criteria in 49 CFR §173 Subpart D. Details are in the tabs above; differences are highlighted.

PG I PG I
1DD
2Ethyl phosphonous dichloride, anhydrous pyrophoric liquidMethyl phosphonous dichloride, pyrophoric liquid
36.16.1
4NA 2845NA 2845
5II
66.1, 4.26.1, 4.2
72, B9, B14, B32, T20, TP4, TP12, TP13, TP38, TP452, B9, B14, B16, B32, T20, TP4, TP12, TP13, TP38, TP45
8ANoneNone
8B227227
8C244244
9AForbiddenForbidden
9BForbiddenForbidden
10ADD
10B1818

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Scope & sources (important)Click to show CFR references

This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):

  • §177.834 - General requirements
  • §177.835 - Class 1 materials
  • §177.837 - Class 3 materials
  • §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
  • §177.839 - Class 8 (corrosive) materials
  • §177.840 - Class 2 (gases) materials
  • §177.841 - Division 6.1 and Division 2.3 materials
  • §177.842 - Class 7 (radioactive) material
  • §177.843 - Contamination of vehicles

Similar substances

UN / IDProper shipping nameHazard class
NA 2845Ethyl phosphonous dichloride, anhydrous pyrophoric liquid6.1
NA 9206Methyl phosphonic dichloride6.1
NA 2927Ethyl phosphonothioic dichloride, anhydrous6.1