2-Methyl-2-butene

2-Methyl-2-butene, 2m2b, 2-methylbut-2-ene, beta-isoamylene, or trimethylethylene is an alkene hydrocarbon with the molecular formula C5H10. It is a flammable liquid. Used as a free radical scavenger in trichloromethane and dichloromethane. It is also used to scavenge hypochlorous acid (HOCl) in the Pinnick oxidation. John Snow, the English physician, experimented with it in the 1840s as an anesthetic Wikipedia

Substance Data

Hazardous Materials Table

(3) Hazard class 3 Flammable liquids	(4) Identification number UN 2460	(5) Packing Group II
(6) Labels
(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. 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 IP8 Ammonia solutions may be transported in rigid or composite plastic IBCs (31H1, 31H2 and 31HZ1) that have successfully passed, without leakage or permanent deformation, the hydrostatic test specified in § 178.814 of this subchapter at a test pressure that is not less than 1.5 times the vapor pressure of the contents at 55 °C (131 °F). Browse special provision IP8 T7 Minimum test pressure (bar) 4 Minimum shell thickness § 178.274(d)(2) Pressure-relief requirements Normal Bottom opening requirements § 178.275(d)(3) Browse special provision T7 TP1 The maximum degree of filling must not exceed the degree of filling determined by the following: Where: tr is the maximum mean bulk temperature during transport, and tf is the temperature in degrees celsius of the liquid during filling. Browse special provision TP1
(8) Packing Authorizations (§173.***) (8A) Exceptions 150 see 49 CFR §173.150 (8B) Non-bulk 202 see 49 CFR §173.202 (8C) Bulk 242 see 49 CFR §173.242
(9) Quantity Limits (9A) Passenger aircraft/rail 5 L (9B) Cargo aircraft only 60 L
(10) Vessel stowage (10A) Location E Stowage category “E” means the material may be stowed “on deck” or “under deck” 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 is prohibited from carriage on a passenger vessel in which the limiting number of passengers is exceeded. Source: 49 CFR §172.101(k) (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.

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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.