Perchloric acid, with more than 72 percent acid by mass
Perchloric acid is a mineral acid with the formula HClO4. It is an oxoacid of chlorine. Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid, nitric acid and hydrochloric acid. It is a powerful oxidizer when hot, but aqueous solutions up to approximately 70% by weight at room temperature are generally safe, only showing strong acid features and no oxidizing properties. Wikipedia
Data from the Hazardous Materials Table
Source: 49 CFR §172 (2018/07)(3) Hazard ClassForbidden |
(4) Identification number |
(5) Packing Group |
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(6) Labels n/a |
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(7) Special Provisions (§172.102)
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(8) Packing Authorizations (§173.***)
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| (8A) Exceptions | n/a | see 49 CFR §173. n/a |
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| (8B) Non-bulk | n/a | see 49 CFR §173. n/a |
| (8C) Bulk | n/a | see 49 CFR §173. n/a |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | n/a |
|---|---|
| (9B) Cargo aircraft only | n/a |
(10) Vessel stowage
| (10A) Location | |
|---|---|
| (10B) Other | n/a |
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.
This Hazmat is classified as "Forbidden". This means the material may not be offered for transportation or transported in the applicable mode of transport.