HazMat Tool — substance information

Ethyldichloroarsine

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 1892
Hazard class
6.1
Packing group
I (multiple — see tabs)
ERG guide
ERG 151
Special provisions
SP 2, SP B9, SP B14, SP B32, SP T20, SP TP2, SP TP13, SP TP38, more…
Source
49 CFR §172 (15 June 2026)

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Ethyldichloroarsine


Ethyldichloroarsine, also known as ED, CY, and ethyl Dick, is an organoarsenic compound with the formula CH3CH2AsCl2. This colourless volatile liquid is a highly toxic vesicant (blister agent) that was used during World War I in chemical warfare. The molecule is pyramidal with the Cl–As–Cl and C–As–Cl angles approaching 90° (see image). Ethyldichloroarsine has high chronic toxicity, similar to lewisite Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

598-14-1

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 151

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 1892

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1)

(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
TP2
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 1556

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1)

(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
T20
TP4
TP13
TP38
TP45

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

(8A) ExceptionsNone
(8B) Non-bulk192see 49 CFR §173.192
(8C) BulkNone

(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
1D
2EthyldichloroarsineMethyldichloroarsine
36.16.1
4UN 1892NA 1556
5II
66.16.1
72, B9, B14, B32, T20, TP2, TP13, TP38, TP452, T20, TP4, TP13, TP38, TP45
8ANoneNone
8B227192
8C244None
9AForbiddenForbidden
9BForbiddenForbidden
10ADD
10B4040

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
UN 1698Diphenylamine chloroarsine6.1
UN 1699Diphenylchloroarsine, liquid6.1
UN 3450Diphenylchloroarsine, solid6.1
DichlorovinylchloroarsineForbidden
UN 1892Ethyldichloroarsine6.1