HazMat Tool — substance information

Fulminating mercury

HMT 15 June 2026

UN / ID: n/a
Hazard class: Forbidden
Packing group: n/a (multiple — see tabs)
ERG guide: —
Special provisions: —
Source: 49 CFR §172 (15 June 2026)

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Fulminating mercury

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

Packing group
Packing group

(3) Hazard Class

Forbidden

(7) Special Provisions (§172.102)

(8) Packing Authorizations (§173.***)

(8A) Exceptions	n/a	see 49 CFR §173. n/a
(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	n/a see
(10B) Other	n/a

(3) Hazard Class

8
Corrosive liquids

This entry is signed with "A". The letter "A" denotes a material that is subject to the requirements of this subchapter only when offered or intended for transportation by aircraft, unless the material is a hazardous substance or a hazardous waste. A shipping description entry preceded by an "A" may be used to describe a material for other modes of transportation provided all applicable requirements for the entry are met.
This entry is signed with "W". The letter "W" denotes a material that is subject to the requirements of this subchapter only when offered or intended for transportation by vessel, unless the material is a hazardous substance or a hazardous waste. A shipping description entry preceded by a "W" may be used to describe a material for other modes of transportation provided all applicable requirements for the entry are met.

(7) Special Provisions (§172.102)

×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.

365	For manufactured instruments and articles containing mercury, see UN3506. Browse special provision 365

(8) Packing Authorizations (§173.***)

(8A) Exceptions	164	see 49 CFR §173.164
(8B) Non-bulk	164	see 49 CFR §173.164
(8C) Bulk	240	see 49 CFR §173.240

(9) Quantity Limits

(9A) Passenger aircraft/rail	35 kg
(9B) Cargo aircraft only	35 kg

(10) Vessel stowage

(10A) Location

Stowage category “B” means

(i) The material may be stowed “on deck” or “under deck” on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and
(ii) “On deck only” on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.

Source: 49 CFR §172.101(k)

(10B) Other

40	see 49 CFR §176.84
97	see 49 CFR §176.84

Source: 49 CFR §176.84

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 n/a	PG III
1		A W
2	Fulminating mercury	Mercury
3	Forbidden	8
4	n/a	UN 2809
5	n/a	III
6	n/a	8, 6.1
7	n/a	365
8A	n/a	164
8B	n/a	164
8C	n/a	240
9A	n/a	35 kg
9B	n/a	35 kg
10A	n/a	B
10B	n/a	40, 97

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 0135	Mercury fulminate, wetted with not less than 20 percent water, or mixture of alcohol and water, by mass	1.1A
UN 3011	Mercury based pesticides, liquid, toxic, flammable, flash point not less than 23 degrees C	6.1
UN 2778	Mercury based pesticides, liquid, flammable, toxic, flash point less than 23 degrees C	3
	Mercury iodide aquabasic ammonobasic (Iodide of Millon's base)	Forbidden
UN 3012	Mercury based pesticides, liquid, toxic	6.1
UN 2777	Mercury based pesticides, solid, toxic	6.1
UN 3506	Mercury contained in manufactured articles	8
UN 2024	Mercury compound, liquid, n.o.s	6.1
UN 2025	Mercury compound, solid, n.o.s	6.1
	Azido hydroxy tetrazole (mercury and silver salts)	Forbidden
UN 1630	Mercury ammonium chloride	6.1
UN 1642	Mercury oxycyanide, desensitized	6.1
UN 1643	Mercury potassium iodide	6.1
UN 1629	Mercury acetate	6.1
	Mercury acetylide	Forbidden