HazMat Tool — substance information Reference only — not a shipping paper, placard mandate, or CVI record.

Ethyldichlorosilane

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 1183
Hazard class
4.3
Packing group
I (multiple — see tabs)
ERG guide
ERG 139
Special provisions
SP A2, SP A7, SP N34, SP T14, SP TP2, SP TP7, SP TP13, SP W31
Source
49 CFR §172 (15 June 2026)

Spot an error in this entry?

Ethyldichlorosilane

Substance Data

Source: PubChem (HSDB, 15.12.2019)

CAS-Number

1789-58-8

Flash Point

Boiling Point


Emergency Response Guide No. 139

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

4.3
Dangerous when wet materials

(4) Identification number Help

UN 1183

(5) Packing Group Help

I

(6) Labels Help

Dangerous when wet materials (4.3) Corrosive liquids (8) Flammable liquids (3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A2
A7
N34
T14
TP2
TP7
TP13
W31

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

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk244see 49 CFR §173.244

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only1 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard class

4.3
Dangerous when wet materials

(4) Identification number Help

UN 1242

(5) Packing Group Help

I

(6) Labels Help

Dangerous when wet materials (4.3) Corrosive liquids (8) Flammable liquids (3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A2
A7
B6
B77
N34
T14
TP2
TP7
TP13
W31

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

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only1 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard class

8
Corrosive liquids

(4) Identification number Help

UN 1767

(5) Packing Group Help

II

(6) Labels Help

Corrosive liquids (8) Flammable liquids (3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A7
B6
N34
T10
TP2
TP7
TP13

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

(8A) ExceptionsNone
(8B) Non-bulk206see 49 CFR §173.206
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard class

3
Flammable liquids

(4) Identification number Help

UN 1162

(5) Packing Group Help

II

(6) Labels Help

Flammable liquids (3) Corrosive liquids (8)

(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.
B77
T10
TP2
TP7
TP13

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

(8A) ExceptionsNone
(8B) Non-bulk206see 49 CFR §173.206
(8C) Bulk243see 49 CFR §173.243

(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 PG II PG II
1
2EthyldichlorosilaneMethyldichlorosilaneDiethyldichlorosilaneDimethyldichlorosilane
34.34.383
4UN 1183UN 1242UN 1767UN 1162
5IIIIII
64.3, 8, 34.3, 8, 38, 33, 8
7A2, A7, N34, T14, TP2, TP7, TP13, W31A2, A7, B6, B77, N34, T14, TP2, TP7, TP13, W31A7, B6, N34, T10, TP2, TP7, TP13B77, T10, TP2, TP7, TP13
8ANoneNoneNoneNone
8B201201206206
8C244243243243
9AForbiddenForbiddenForbiddenForbidden
9B1 L1 L30 LForbidden
10ADDCB
10B21, 40, 49, 53, 58, 10021, 40, 49, 53, 58, 10040, 53, 5840

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.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.