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-Number598-14-1 |
Flash Pointn/a | Boiling Pointn/a |
| Emergency Response Guide No. 151 |
Data from the Hazardous Materials Table
Source: 49 CFR §172 (2026/05)(3) Hazard Class6.1Poisonous Material |
(4) Identification number |
(5) Packing Group |
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(6) Labels |
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(7) Special Provisions (§172.102)
|
||||||||||||||||||||
| 2 | |
|---|---|
| B9 | |
| B14 | |
| B32 | |
| T20 | |
| TP2 | |
| TP13 | |
| TP38 | |
| TP45 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | None | |
|---|---|---|
| (8B) Non-bulk | 227 | see 49 CFR §173.227 |
| (8C) Bulk | 244 | see 49 CFR §173.244 |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | Forbidden |
|---|---|
| (9B) Cargo aircraft only | Forbidden |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (10B) Other |
(3) Hazard Class6.1Poisonous Material |
(4) Identification number |
(5) Packing Group |
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(6) Labels |
||||||||||||||
(1) Symbols |
||||||||||||||
| 2 | |
|---|---|
| T20 | |
| TP4 | |
| TP13 | |
| TP38 | |
| TP45 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | None | |
|---|---|---|
| (8B) Non-bulk | 192 | see 49 CFR §173.192 |
| (8C) Bulk | None |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | Forbidden |
|---|---|
| (9B) Cargo aircraft only | Forbidden |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (10B) Other |
Comparison View of Different Packing Groups
More than one packing group is indicated for this entry. Criteria for assignment see 49 CFR §173 Subpart D. You can find specific details in the tabs above. Differences are highlighted.
Segregation Chart for Load, Transport, Storage
In this table a statement is contained for each hazard class whether the loading, transport or storage with other hazard classes is allowed, is not permitted or is restricted. The table is based on U.S.-Code 49 CFR §177.848.
- §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.
Substances with similar name
| UN-Number | Name | Hazard Class |
|---|---|---|
| UN 1698 | Diphenylamine chloroarsine | 6.1 |
| UN 1699 | Diphenylchloroarsine, liquid | 6.1 |
| UN 3450 | Diphenylchloroarsine, solid | 6.1 |
| UN 1892 | Ethyldichloroarsine | 6.1 |
| NA 1556 | Methyldichloroarsine | 6.1 |

