Hydrogen cyanide, stabilized, with less than 3 percent water and absorbed in a porous inert material

Hydrogen cyanide (formerly known as prussic acid) is a chemical compound with the formula HCN and structural formula H−C≡N. It is a highly toxic and flammable liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F). HCN is produced on an industrial scale and is a highly valued precursor to many chemical compounds ranging from polymers to pharmaceuticals. Large-scale applications are for the production of potassium cyanide and adiponitrile, used in mining and plastics, respectively. Wikipedia

Substance Data

Source: TOXNET

CAS-Number

74-90-8

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 152

Data from the Hazardous Materials Table

Source: 49 CFR §172 (2018/07)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number

UN 1614

(5) Packing Group

(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.

5	If this material meets the definition for a material poisonous by inhalation (see §171.8 of this subchapter), a shipping name must be selected which identifies the inhalation hazard, in Division 2.3 or Division 6.1, as appropriate. Browse special provision 5
387	see 49 CFR §172.102

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	195	see 49 CFR §173.195
(8C) Bulk	None

(9) Quantity Limits

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

(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

25	Protected from sources of heat
40	Stow “clear of living quarters”.

Source: 49 CFR §176.84

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.

Note: The HMR prohibit only those Division 6.1 liquids that meet the definition of a Packing Group (PG) I and Hazard Zone A. See special provision 1 and PHMSA Interpretation #09-0252.

Packages with POISON or POISON INHALATION HAZARD labels, or a POISON label displaying “PG III,” or “PG III” marked next to a POISON label may not be transported with foodstuffs, feed or any other edible material, intended for humans or animals. For exceptions see 49 CFR §177.841(e).

There are no restrictions with hazardous materials, as pointed out in the instructions for using the Segregation Table (see 49 CFR §177.848(e)). But please, refer to following requirements in 49 CFR §177 Subpart B (Loading and Unloading):

§177.834 - General requirements
§177.835 - Class 1 materials
§177.837 - Class 3 materials
§177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials.
§177.839 - Class 8 (corrosive) materials
§177.840 - Class 2 (gases) materials
§177.841 - Division 6.1 and Division 2.3 materials
§177.842 - Class 7 (radioactive) material
§177.843 - Contamination of vehicles.

Substances with similar name

UN-Number	Name	Hazard Class
	Hydrocyanic acid, anhydrous, see Hydrogen cyanide etc
UN 1613	Hydrocyanic acid, aqueous solutions or Hydrogen cyanide, aqueous solutions with not more than 20 percent hydrogen cyanide	6.1
NA 1613	Hydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide	6.1
UN 1049	Hydrogen, compressed	2.1
UN 1966	Hydrogen, refrigerated liquid (cryogenic liquid)	2.1
UN 2034	Hydrogen and Methane mixtures, compressed	2.1
UN 1048	Hydrogen bromide, anhydrous	2.3
UN 1050	Hydrogen chloride, anhydrous	2.3
UN 2186	Hydrogen chloride, refrigerated liquid	2.3
UN 3294	Hydrogen cyanide, solution in alcohol with not more than 45 percent hydrogen cyanide	6.1
UN 1614	Hydrogen cyanide, stabilized, with less than 3 percent water and absorbed in a porous inert material	6.1
UN 1051	Hydrogen cyanide, stabilized with less than 3 percent water	6.1
UN 1740	Hydrogendifluoride, solid, n.o.s	8
UN 3471	Hydrogendifluoride solution, n.o.s	8
UN 2197	Hydrogen iodide, anhydrous	2.3
UN 2015	Hydrogen peroxide, stabilized or Hydrogen peroxide aqueous solutions, stabilized with more than 60 percent hydrogen peroxide	5.1
UN 3149	Hydrogen peroxide and peroxyacetic acid mixtures, stabilized with acids, water, and not more than 5 percent peroxyacetic acid	5.1
	Hydrogen sulfate, see Sulfuric acid
UN 1053	Hydrogen sulfide	2.3
UN 2907	Isosorbide dinitrate mixture with not less than 60 percent lactose, mannose, starch or calcium hydrogen phosphate	4.1
	Peroxyacetic acid, with more than 43 percent and with more than 6 percent hydrogen peroxide	Forbidden
UN 3421	Potassium hydrogendifluoride solution	8
UN 2439	Sodium hydrogendifluoride	8
	Sulfuretted hydrogen, see Hydrogen sulfide
UN 1511	Urea hydrogen peroxide	5.1