HazMat Tool — substance information

Oxidizing liquid, n.o.s

HMT 15 June 2026

UN / ID: UN 3139
Hazard class: 5.1
Packing group: I (multiple — see tabs)
ERG guide: ERG 140
Special provisions: SP 62, SP 127, SP A2
Source: 49 CFR §172 (15 June 2026)

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Oxidizing liquid, n.o.s

Emergency Response Guide No. 140

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

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 of this subchapter) are not authorized for transportation under this entry. Browse special provision 62
127	Mixtures containing oxidizing and organic materials transported under this entry may not meet the definition and criteria of a Class 1 material. (See § 173.50 of this subchapter.) Browse special provision 127
A2	Single packagings are not permitted on aircraft. Browse special provision A2

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	201	see 49 CFR §173.201
(8C) Bulk	243	see 49 CFR §173.243

(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

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 3139

(5) Packing Group

Comparison View of PG

(6) Labels

(1) Symbols

(7) Special Provisions (§172.102)

62	Oxygen generators (see § 171.8 of this subchapter) are not authorized for transportation under this entry. Browse special provision 62
127	Mixtures containing oxidizing and organic materials transported under this entry may not meet the definition and criteria of a Class 1 material. (See § 173.50 of this subchapter.) Browse special provision 127
148	For domestic transportation, this entry directs to § 173.66 of this subchapter for: a. The standards for transporting a single bulk hazardous material for blasting by cargo tank motor vehicles (CTMV); and b. The standards for CTMVs capable of transporting multiple hazardous materials for blasting in bulk and non-bulk packagings (i.e., a multipurpose bulk truck). Note: “UN3375, Ammonium nitrate emulsion” and “UN0332, Explosive, blasting, type E or Agent blasting, type E” are subject to the United Nations (UN) Test Series 8(d) (UN/SCETDG/55/INF.27) (IBR, see § 171.7 of this subchapter), otherwise known as the Vented Pipe Test (VPT). Browse special provision 148
A2	Single packagings are not permitted on aircraft. Browse special provision A2
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
TP48	The use of IM 101 and 102 portable tanks when transported in accordance with IME Standard 23 (IBR, see § 171.7 of this subchapter). Browse special provision TP48

(8) Packing Authorizations (§173.***)

(8A) Exceptions	152	see 49 CFR §173.152
(8B) Non-bulk	202	see 49 CFR §173.202
(8C) Bulk	242	see 49 CFR §173.242

(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

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 3139

(5) Packing Group

III

Comparison View of PG

(6) Labels

(1) Symbols

(7) Special Provisions (§172.102)

62	Oxygen generators (see § 171.8 of this subchapter) are not authorized for transportation under this entry. Browse special provision 62
127	Mixtures containing oxidizing and organic materials transported under this entry may not meet the definition and criteria of a Class 1 material. (See § 173.50 of this subchapter.) Browse special provision 127
148	For domestic transportation, this entry directs to § 173.66 of this subchapter for: a. The standards for transporting a single bulk hazardous material for blasting by cargo tank motor vehicles (CTMV); and b. The standards for CTMVs capable of transporting multiple hazardous materials for blasting in bulk and non-bulk packagings (i.e., a multipurpose bulk truck). Note: “UN3375, Ammonium nitrate emulsion” and “UN0332, Explosive, blasting, type E or Agent blasting, type E” are subject to the United Nations (UN) Test Series 8(d) (UN/SCETDG/55/INF.27) (IBR, see § 171.7 of this subchapter), otherwise known as the Vented Pipe Test (VPT). Browse special provision 148
A2	Single packagings are not permitted on aircraft. Browse special provision A2
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	241	see 49 CFR §173.241

(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

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, n.o.s	Oxidizing liquid, n.o.s	Oxidizing liquid, n.o.s
3	5.1	5.1	5.1
4	UN 3139	UN 3139	UN 3139
5	I	II	III
6	5.1	5.1	5.1
7	62, 127, A2	62, 127, 148, A2, IB2, TP48	62, 127, 148, A2, IB2
8A	None	152	152
8B	201	202	203
8C	243	242	241
9A	Forbidden	1 L	2.5 L
9B	2.5 L	5 L	30 L
10A	D	B	B
10B	56, 58, 138	56, 58, 138	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.

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UN 3103	Organic peroxide type C, liquid	5.2
UN 3105	Organic peroxide type D, liquid	5.2
UN 3107	Organic peroxide type E, liquid	5.2
UN 3109	Organic peroxide type F, liquid	5.2
UN 1308	Zirconium suspended in a liquid	3
UN 1389	Alkali metal amalgam, liquid	4.3
UN 1719	Caustic alkali liquids, n.o.s.	8
UN 2922	Corrosive liquids, toxic, n.o.s.	8
UN 1992	Flammable liquids, toxic, n.o.s.	3
UN 1422	Potassium sodium alloys, liquid	4.3
UN 1420	Potassium, metal alloys, liquid	4.3
UN 0395	Rocket motors, liquid fueled	1.2J
UN 0396	Rocket motors, liquid fueled	1.3J