HazMat Tool — substance information

Benzyl chloride

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 1738
Hazard class
6.1
Packing group
II (multiple — see tabs)
ERG guide
ERG 156
Special provisions
SP A3, SP A7, SP B70, SP IB2, SP N33, SP N42, SP T8, SP TP2, more…
Source
49 CFR §172 (15 June 2026)

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Benzyl chloride


Benzyl chloride, or α-chlorotoluene, is an organic compound with the formula C6H5CH2Cl. This colorless liquid is a reactive organochlorine compound that is a widely used alkylating agent. Its strong alkylating tendency renders it hazardous Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

100-44-7

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 156

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 1738

(5) Packing Group Help

II

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) 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.
A3
A7
B70
IB2
N33
N42
T8
TP2
TP13

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

(8A) ExceptionsNone
(8B) Non-bulk202see 49 CFR §173.202
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail1 L
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 1738

(5) Packing Group Help

II

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) 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.
A3
A7
B8
B11
IB2
N33
N34
N43
T8
TP2
TP13

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

(8A) Exceptions153see 49 CFR §173.153
(8B) Non-bulk202see 49 CFR §173.202
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail1 L
(9B) Cargo aircraft only30 L

(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 II PG II
1
2Benzyl chlorideBenzyl chloride unstabilized
36.16.1
4UN 1738UN 1738
5IIII
66.1, 86.1, 8
7A3, A7, B70, IB2, N33, N42, T8, TP2, TP13A3, A7, B8, B11, IB2, N33, N34, N43, T8, TP2, TP13
8ANone153
8B202202
8C243243
9A1 L1 L
9B30 L30 L
10ADD
10B13, 40, 53, 5813, 40, 53, 58

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