HazMat Tool — substance information

Oxidizing liquid, corrosive, n.o.s.

HMT May 2026

UN / ID: UN 3098
Hazard class: 5.1
Packing group: I (multiple — see tabs)
ERG guide: ERG 140
Special provisions: SP 62
Source: 49 CFR §172 (2026/05)

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Oxidizing liquid, corrosive, n.o.s.

Emergency Response Guide No. 140

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

Packing group I
Packing group II
Packing group III

(3) Hazard Class

5.1
Oxidizers

This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).

(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.

62	Oxygen generators (see §171.8) are not authorized for transportation under this entry. Browse special provision 62

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	201	see 49 CFR §173.201
(8C) Bulk	244	see 49 CFR §173.244

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	2.5 L

(10) Vessel stowage

(10A) Location

Stowage category “D” means the material must be stowed “on deck only” on a cargo vessel or 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, but the material is prohibited on a passenger vessel in which the limiting number of passengers is exceeded.

Source: 49 CFR §172.101(k)

(10B) Other

13	see 49 CFR §176.84
56	see 49 CFR §176.84
58	see 49 CFR §176.84
138	see 49 CFR §176.84

Source: 49 CFR §176.84

(3) Hazard Class

5.1
Oxidizers

(4) Identification number

UN 3098

(5) Packing Group

Comparison View of PG

(6) Labels

(1) Symbols

(7) Special Provisions (§172.102)

62	Oxygen generators (see §171.8) are not authorized for transportation under this entry. Browse special provision 62
IB1	Authorized IBCs: Metal (31A, 31B and 31N). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized. Browse special provision IB1

(8) Packing Authorizations (§173.***)

(8A) Exceptions	152	see 49 CFR §173.152
(8B) Non-bulk	202	see 49 CFR §173.202
(8C) Bulk	243	see 49 CFR §173.243

(9) Quantity Limits

(9A) Passenger aircraft/rail	1 L
(9B) Cargo aircraft only	5 L

(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

13	see 49 CFR §176.84
56	see 49 CFR §176.84
58	see 49 CFR §176.84
138	see 49 CFR §176.84

Source: 49 CFR §176.84

(3) Hazard Class

5.1
Oxidizers

(4) Identification number

UN 3098

(5) Packing Group

III

Comparison View of PG

(6) Labels

(1) Symbols

(7) Special Provisions (§172.102)

62	Oxygen generators (see §171.8) are not authorized for transportation under this entry. Browse special provision 62
IB2	Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized. Browse special provision IB2

(8) Packing Authorizations (§173.***)

(8A) Exceptions	152	see 49 CFR §173.152
(8B) Non-bulk	203	see 49 CFR §173.203
(8C) Bulk	242	see 49 CFR §173.242

(9) Quantity Limits

(9A) Passenger aircraft/rail	2.5 L
(9B) Cargo aircraft only	30 L

(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

13	see 49 CFR §176.84
56	see 49 CFR §176.84
58	see 49 CFR §176.84
138	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 I	PG II	PG III
1	G	G	G
2	Oxidizing liquid, corrosive, n.o.s.	Oxidizing liquid, corrosive, n.o.s.	Oxidizing liquid, corrosive, n.o.s.
3	5.1	5.1	5.1
4	UN 3098	UN 3098	UN 3098
5	I	II	III
6	5.1, 8	5.1, 8	5.1, 8
7	62	62, IB1	62, IB2
8A	None	152	152
8B	201	202	203
8C	244	243	242
9A	Forbidden	1 L	2.5 L
9B	2.5 L	5 L	30 L
10A	D	B	B
10B	13, 56, 58, 138	13, 56, 58, 138	13, 56, 58, 138

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.

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 3516	Adsorbed gas, toxic, corrosive, n.o.s. Inhalation hazard zone A	2.3
UN 3516	Adsorbed gas, toxic, corrosive, n.o.s. Inhalation hazard zone B	2.3
UN 3516	Adsorbed gas, toxic, corrosive, n.o.s. Inhalation hazard zone C	2.3
UN 3516	Adsorbed gas, toxic, corrosive, n.o.s. Inhalation hazard zone D	2.3
UN 3308	Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone C	2.3
UN 3308	Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone D	2.3
UN 1774	Fire extinguisher charges, corrosive liquid	8
UN 3093	Corrosive liquids, oxidizing, n.o.s.	8
UN 3264	Corrosive liquid, acidic, inorganic, n.o.s	8
UN 3265	Corrosive liquid, acidic, organic, n.o.s	8
UN 3266	Corrosive liquid, basic, inorganic, n.o.s	8
UN 3267	Corrosive liquid, basic, organic, n.o.s	8
UN 3094	Corrosive liquids, water-reactive, n.o.s	8
UN 3505	Chemical under pressure, flammable, corrosive, n.o.s	2.1
UN 3260	Corrosive solid, acidic, inorganic, n.o.s	8