HazMat Tool — substance information
Dichloroacetic acid
HMT 15 June 2026Dichloroacetic acid
Dichloroacetic acid (DCA), sometimes called bichloroacetic acid (BCA), is the organic compound with formula CHCl2CO2H. It is an analogue of acetic acid, in which 2 of the 3 hydrogen atoms of the methyl group have been replaced by chlorine atoms. Like the other chloroacetic acids, it has various practical applications. The salts and esters of dichloroacetic acid are called dichloroacetates Wikipedia
Substance Data
Source: PubChem (HSDB, 04.12.2019)CAS-Number79-43-6 |
Flash Pointn/a | Boiling Pointn/a |
| Emergency Response Guide No. 153 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard Class8Corrosive liquids |
(4) Identification number |
(5) Packing Group |
||||||||||||||
(6) Labels |
||||||||||||||||
(7) Special Provisions (§172.102)
|
||||||||||||||||
| A3 | |
|---|---|
| A7 | |
| B2 | |
| IB2 | |
| N34 | |
| T8 | |
| TP2 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | 154 | see 49 CFR §173.154 |
|---|---|---|
| (8B) Non-bulk | 202 | see 49 CFR §173.202 |
| (8C) Bulk | 242 | see 49 CFR §173.242 |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | 1 L |
|---|---|
| (9B) Cargo aircraft only | 30 L |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (10B) Other |
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.
Note: In this segregation and separation chart are HazMat of hazard class 8 considered depending if there are liquid. Currently HazMat Tool is not able to to check if a HazMat is liquid or not. Therefore it is assumed as liquid. See PHMSA Interpretation #09-0252.
| Hazard class | 8![]() | 7![]() | 6.1![]() | 5.2![]() | 5.1![]() | 4.3![]() | 4.2![]() | 4.1![]() | 3![]() | 2.3B![]() | 2.3A![]() | 2.2![]() | 2.1![]() | 1.6![]() | 1.5![]() | 1.4![]() | 1.3![]() | 1.1/1.2![]() |
1.1/1.2 ![]() | ||||||||||||||||||
1.3 ![]() | ||||||||||||||||||
1.4 ![]() | ||||||||||||||||||
1.5 ![]() | ||||||||||||||||||
1.6 ![]() | ||||||||||||||||||
2.1 ![]() | ||||||||||||||||||
2.2 ![]() | ||||||||||||||||||
2.3A ![]() | ||||||||||||||||||
2.3B ![]() | ||||||||||||||||||
3 ![]() | ||||||||||||||||||
4.1 ![]() | ||||||||||||||||||
4.2 ![]() | ||||||||||||||||||
4.3 ![]() | ||||||||||||||||||
5.1 ![]() | ||||||||||||||||||
5.2 ![]() | ||||||||||||||||||
6.1 ![]() | ||||||||||||||||||
7 ![]() | ||||||||||||||||||
8 ![]() |
| Must not be loaded, transported, or stored together in the same vehicle or facility. | |
| May be loaded, transported, or stored together. | |
| May be loaded, transported, or stored together only with restrictions. |
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|---|---|
| UN 3250 | Chloroacetic acid, molten | 6.1 |
| UN 1751 | Chloroacetic acid, solid | 6.1 |
| UN 1750 | Chloroacetic acid, solution | 6.1 |
| UN 2564 | Trichloroacetic acid, solution | 8 |
| UN 1839 | Trichloroacetic acid | 8 |
| UN 3416 | Chloroacetophenone, liquid, (CN) | 6.1 |
| UN 1697 | Chloroacetophenone, solid, (CN) | 6.1 |

