Appendix D to Part 180 - Hazardous Materials Corrosive to Tanks or Service Equipment
49:3.1.1.1.3.9.1.1.12 : Appendix D
Appendix D to Part 180 - Hazardous Materials Corrosive to Tanks or
Service Equipment
This list contains materials identified either by proper
shipping name in 49 CFR 172.101 or shipped under an “n.o.s.”
shipping description that, under certain conditions, can corrode
carbon steel tanks or service equipment at a rate that may reduce
the design level of reliability and safety of the tank or equipment
to an unsafe level before the next qualification. Materials
identified on this list are considered corrosive to the tank or
service equipment.
While every effort was made to identify materials deemed
corrosive to the tank or service equipment, owners and operators
are cautioned that this list may not be inclusive. Tank car owners
and operators are reminded of their duty to ensure that no
in-service tank will deteriorate below the specified minimum
thickness requirements in this subchapter. See § 180.509(f)(3). In
addition, FRA states a tank car owner must designate an internal
coating or lining appropriately based on its knowledge of the
chemical and not rely simply on this list. Regarding future
thickness tests, this list may also be modified based on an
analysis of the test results by the car owner, the Department of
Transportation, or the Association of American Railroads' Tank Car
Committee.
Hazardous Materials Table Proper Shipping Names (See § 172.101)
Acetic acid, glacial or Acetic acid solution Aluminum chloride,
solution Arsenic acid, liquid Arsenic acid, solid Butyric acid
Ferric chloride, solution Fertilizer ammoniating solution
(
Nitrogen fertilizer solution) Fluoroboric acid
Fluorosilicic acid Formaldehyde, solutions, flammable Formaldehyde,
solutions Hydrobromic acid Hydrochloric acid Hydrochloric acid
solution Hydrofluoric acid and Sulfuric acid mixtures Hydrofluoric
acid Hydrogen peroxide and peroxyacetic acid mixtures, stabilized
Hydrogen, peroxide, aqueous solutions Hydrogen peroxide, stabilized
or Hydrogen peroxide aqueous solutions, stabilized
Hypochlorite solutions Nitric acid Phenyl phosphorus dichloride
Phenyl phosphorus thiodichloride Phosphoric acid solution
Phosphoric acid, solid Phosphorus trichloride (
Phosphorus
chloride) Sodium chlorate Sodium chlorate, aqueous solution
Sodium hydrosulfide Sulfur, molten Sulfuric acid Sulfuric acid,
fuming Sulfuric acid, spent Zinc chloride, anhydrous Zinc chloride,
solution Materials Transported Under an “N.O.S.” Description
Benzoic acid (Environmentally hazardous substance, liquid, n.o.s.,
(RQ 5,000 pounds) Bisulphites, aqueous solution, n.o.s. (Ammonium
bisulfide) Black liquor (Corrosive liquids, n.o.s. (contains
sulfuric acid)) Calcium lignosulfonate (not regulated under this
subchapter) Hexanoic acid (Corrosive liquids, n.o.s. (contains
hexanoic acid)) Lignin liquor (not regulated under this subchapter)
Lithium chloride (not regulated under this subchapter) Sodium
polyacrylate (not regulated under this subchapter) Titanium sulfate
solution (Corrosive liquids, n.o.s. (contains sulfuric acid)) White
liquor (not regulated under this subchapter) [77 FR 37991, June 25,
2012]