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

Magnesium chlorate

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 2723
Hazard class
5.1
Packing group
II
ERG guide
ERG 140
Special provisions
SP IB8, SP IP2, SP IP4, SP T3, SP TP33
Source
49 CFR §172 (15 June 2026)

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Magnesium chlorate


Magnesium chlorate refers to inorganic compounds with the chemical formula Mg(ClO3)2(H2O)x. The anhydrous (x = 0), dihydrate (x = 2), and hexahydrate (x = 6) are known. These are thermally labile white solids. The hexahydrate has been identified on the Martian surface Wikipedia

Emergency Response Guide No. 140

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

5.1
Oxidizers

(4) Identification number Help

UN 2723

(5) Packing Group Help

II

(6) Labels Help

Oxidizers (5.1)

(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.
IB8
IP2
IP4
T3
TP33

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

(8A) Exceptions152see 49 CFR §173.152
(8B) Non-bulk212see 49 CFR §173.212
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/rail5 kg
(9B) Cargo aircraft only25 kg

(10) Vessel stowage Help

(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.

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.