divisions (i) and (iv) of this subparagraph do not apply.

(iv) When top of slip cover or fiberboard box consists of only one thickness of material, reinforcement must have a plane surface of same interior dimensions and thickness. Reinforcement must be of such height as to provide minimum clearance required above and must be constructed to remain securely in place or be fastened to slip cover or fiberboard box.

(3) All fiberboard must be at least 200 pound test (Mullen) and completed package (battery and slip cover or fiberboard box) must be capable of withstanding top-to-bottom compression test of at least 500 pounds without damage to battery terminals, battery cell covers, and filler caps.

(d) Electric storage batteries, containing electrolyte or corrosive battery fluid, of the nonspillable type, protected against short circuits and completely and securely boxed are exempt from specification packaging, marking, and labeling requirements, except that marking name of contents on outside container is required for shipments via carrier by water. Shipments for transportation by highway carriers are exempt also from Part 177 of this chapter, except § 177.817, and Part 297 of this chapter.

(e) Shipments of electric storage batteries containing electrolyte or battery fluid, loaded or braced to prevent damage in transit and short circuits, are exempt from Parts 171-179 and 297 of this chapter: Provided, however, That storage batteries (either wet or dry) constitute the only commodity being transported in the railroad car or motor vehicle body.

(f) Electric storage batteries containing electrolyte or corrosive battery fluid, other than those of the nonspillable type, when shipped in less-than-carload and less-than-truckload lots, must be marked and labeled as required by §§ 173.401 (a), (c), and 173.402 (a) (3).

(g) Electric storage batteries, containing electrolyte or corrosive battery fluid in a coil from which it is injected into the battery cells by a gas generator and initiator assembled with the battery, and which are nonspillable and leakproof, are exempt from Parts 171-179 and 297 of this chapter when approved by the Bureau of Explosives.

§ 173.261 Fire-extinguisher charges.

(a) Fire-extinguisher charges consisting of sulfuric acid in glass inside containers securely closed may be packed with bicarbonate of soda in specification containers as follows:

(1) Spec. 15A. 15B, 15C, 16A, or 19A (§§ 178.168, 178.169, 178.170, 178.185, or 178.190 of this chapter). Wooden boxes with glass inside containers not over 5 pints each, cushioned.

(2) Spec. 21C (§ 178.224 of this chapter). Fiber drums with a single inside container consisting of a glass bottle not over 64 fluid ounces capacity filled with not over six pounds by weight of sulfuric acid (approximately 50 fluid ounces by volume). Bottle must be suspended in center of outside container by means of adequate supports and surrounded by bicarbonate of soda in sufficient quantity to fill drum and neutralize contents in the event of breakage.

(b) Fire-extinguisher charges as described in subparagraphs (1) to (3) of this paragraph are exempt from specification packaging, marking, and labeling requirements, except that marking name of contents on outside container is required for shipments via carrier by water. Shipments for transportation by highway carriers are exempt also from Part 177 of this chapter, except § 177.817, and Part 297 of this chapter.

(1) Fire-extinguisher charges consisting of sulfuric acid in strong 8-fluid ounce or smaller bottles, securely closed and packed with bicarbonate of soda completely surrounding the bottles of acid in outside fiberboard or wooden boxes. Closure must consist of a metal cap lined with an acid-resistant washer or a composition stopper of material that will not be attacked by the acid.

(2) Fire-extinguisher charges, consisting of chlorosulfonic acid in a hermetically sealed bottle not exceeding 2 ounces capacity, securely packed in a metal container inclosed in another metal container, the inner metal container being cushioned in the outer metal container with asbestos fabric and the completed package embedded in potassium carbonate in outside fiberboard or wooden boxes.

(3) Fire-extinguisher charges, consisting of sulfuric acid in 10-ounce or smaller bottles, securely closed, packed in a tight fiber carton. Closure must consist of a metal cap lined with an acidresistant washer or a composition stopper of material that will not be attacked

by the acid. The bottle and carton packed in either potassium carbonate or potassium carbonate and alkali packed in a cylindrical tin can, with slip cover, secured by tape in outside fiberboard or wooden boxes.

§ 173.262 Hydrobromic acid.

(a) Hydrobromic acid not over 49 percent strength must be packed in specification containers as follows:

(1) Spec. 1A, 1C, 1D, or IE (§§ 178.1, 178.3, 178.4, or 178.7 of this chapter). Carboy in box, keg, or plywood drum.

(2) Spec. 1X (§ 178.5 of this chapter). Boxed carboys; single-trip for export only. For shipment by common carriers by water to noncontiguous territories or possessions of the United States and foreign countries; shipments from inland points in the United States which are consigned to such destinations are authorized to be transported to ship side by rail freight in carload lots only and by motor vehicle in truckload lots only.

(3) Spec. 11A or 11B (§§ 178.160 or 178.161 of this chapter). Wooden barrels or kegs with glass or earthenware inside containers, not over 2 gallons each.

(4) Spec. 15A, 15B, 15C, 16A, or 19A (§§ 178.168, 178.169, 178.170, 178.185, or 178.190 of this chapter). Wooden boxes with inside containers which must be glass or earthenware, not over 1 gallon each, except that inside containers up to 3 gallons are authorized when only one is packed in each outside container.

(5) Spec. 43A (§ 178.18 of this chapter). Rubber drums. Any such container showing evidence of damage must be tested to 20 pounds hydrostatic pressure, without leakage, before using.

(6) Spec. 103B,1 103B-W, or 111A100W-5 (§§ 179.200, 179.201 of this chapter). Tank cars.

(7) Spec. 12A (§ 178.210 of this chapter). Fiberboard boxes with inside glass bottles not over 5 pints capacity each. Not more than six 5-pint glass bottles may be packed in one outside container. Shipper must have established that the completed package meets test requirements prescribed by § 178.210-10 of this chapter.

(8) Spec. 37P (§ 178.133 of this chapter). Steel drums, not over 5 gallons capacity, with polyethylene liner (nonreusable container). Drums exceeding 1 gallon capacity must be constructed of at least 24 gauge metal.

1 Use of existing tank cars authorized, but new construction not authorized.

86-108-68--14

(9) Spec. 22C (§ 178.198 of this chapter). Plywood drum as prescribed by § 178.198-2(a) of this chapter, with inside spec. 2T (§ 178.21 of this chapter) polyethylene container.

(10) Spec. 6D (§ 178.102 of this chapter). Cylindrical steel overpack with inside spec. 2S (§ 178.35 of this chapter) polyethylene container.

(11) Specification MC 310, MC 311, or MC 312 (8 178.343 of this chapter). Tank motor vehicles, rubber-lined.

(b) Hydrobromic acid greater than 49 percent strength but not over 63 percent strength must be packed in specification containers as follows:

(1) Spec. 22C (§ 178.198 of this chapter). Plywood drum as prescribed by § 178.198-2(a) of this chapter, with spec. 2T (§ 178.21 of this chapter) polyethylene container.

(2) Spec. 6D (§ 178.102 of this chapter). Cylindrical steel overpack with inside spec. 2S (§ 178.35 of this chapter) polyethylene container.

(3) Spec. 15A (§ 178.168 of this chapter. Wooden box having only one polyethylene bottle, with screw-cap closure, not over one-gallon capacity.

(4) Specification MC 310, MC 311, or MC 312 (§ 178.343 of this chapter). Tank motor vehicles, rubber-lined.

[29 F.R. 18725, Dec. 29, 1964, as amended by Order 78, 32 F.R. 3456, Mar. 2, 1967] § 173.263

Hydrochloric (muriatic) acid, hydrochloric (muriatic) acid mixtures, hydrochloric (muriatic) acid solution, inhibited, sodium chlorite solution (not exceeding 42 percent sodium chlorite), and cleaning compounds, liquid, containing hydrochloric (muriatic) acid.

(a) Hydrochloric (muriatic) acid, hydrochloric (muriatic) acid mixtures, hydrochloric (muriatic) acid solution, inhibited, sodium chlorite solution not exceeding 42 percent sodium chlorite, and cleaning compounds, liquid, containing hydrochloric (muriatic) acid must be packed in specification containers as follows:

(1) Spec. 15A, 15B, 15C, 16A, or 19A (§§ 178.168, 178.169, 178.170, 178.185, or 178.190 of this chapter). Wooden boxes with inside containers which must be glass, earthenware, polyethylene or other nonfragile plastic material resistant to the lading (bags are not authorized), not over 1 gallon each, except that inside containers up to 3 gallons each are authorized when only one is packed in each outside container.

(2) Spec. 5D (§ 178.84 of this chapter). Rubber-lined metal barrels or drums. Any such container that shows evidence of damage must be tested, before shipment, for defect in lining in the manner prescribed in spec. 5D.

(3) Spec. 43A (§ 178.18 of this chapter). Rubber drums.

(4) Spec. 11A or 11B (§§ 178.160 or 178.161 of this chapter). Wooden barrels or kegs with glass or earthenware inside containers not over 2 gallons each.

(5) Spec. 1A, 1C, or 1K (§ 178.1, 178.3, or 178.14 of this chapter). Carboys in boxes or kegs.

(6) Spec. 1X (§ 178.5 of this chapter). Boxed carboys; single-trip for export only. For shipment by common carriers by water to noncontiguous territories or possessions of the United States and foreign countries; shipments from inland points in the United States which are consigned to such destinations are authorized to be transported to ship side by rail freight in carload lots only and by motor vehicle in truckload lots only.

(7) Spec. 1D, 1E, or 1EX (single-trip) (§§ 178.4, 178.7, or 178.6 of this chapter). Glass carboys in boxes or plywood drums, of not over 6.5 gallons nominal capacity. Means shall be provided so that accumulated total pressure in bottle shall not exceed 10 p. s. i. gauge at 130° F. or shall vent at a pressure not to exceed 10 p. s. i. gauge.

(8) Spec. 10A (§ 178.155 of this chapter). Rubber-lined wooden barrels or kegs.

(9) Spec. 103B,1 103B-W or 111A100W-5 (§§ 179.200, 179.201 of this chapter). Tank cars. Authorized for acid not over 38 percent strength by weight. Except for hydrochloric (muriatic) acid of 22° Baume strength, and other fuming acids, safety vent of approved design equipped with frangible disc having % inch breather hole in the center thereof or a safety vent of approved design equipped with carbon discs permitting continuous venting may be used.

NOTE 1: Because of the present emergency and until further order of the Commission, hydrochloric acid may be offered for transportation by carriers by water in conformity with Regulations for Explosives or Other Dangerous Articles on Board Vessels, 46 CFR 146.23-13, issued by the Commandant of the Coast Guard.

1 Use of existing tank cars authorized, but new construction not authorized.

(10) Specification MC 310, MC 311, or MC 312 (§ 178.343 of this chapter). Tank motor vehicles lined with rubber or equally acid-resistant material of equivalent strength and durability. Unlined specifications MC 311 and MC 312 tank motor vehicles made from Type 304L stainless steel authorized for sodium chlorite solution not exceeding 42 percent sodium chlorite only.

(11) Spec. 60 (§ 178.255 of this chapter). Portable tanks, rubber-lined.

(12) Spec. 103C-W (§§ 179.200 and 179.201 of this chapter). Tank cars having tanks of type 304L stainless steel. Authorized for sodium chlorite solution not exceeding 42 percent sodium chlorite only.

(13) Spec. 1H, 15P, or 22C (§§ 178.13, 178.182, or 178.198 of this chapter). Metal crate with inside polyethylene carboy; or glued plywood or wooden box, or plywood drum as prescribed by § 178.1982(a) of this chapter, with inside spec. 2T or spec. 2TL (§§ 178.21 or 178.27 of this chapter) polyethylene container.

(14) Spec. 17H, 37A, or 37B (§§ 178.118, 178.131, or § 178.132 of this chapter). Metal drums (single-trip) not over 5 gallons capacity each. Authorized only for hydrochloric (muriatic) acid solution, inhibited, containing not to exceed 15 percent hydrochloric (muriatic) acid. Drums must be lined throughout with a pliable plastic material impervious to the solution. Specs. 37A and 37B metal drums must be at least 24 gauge steel.

(15) Spec. 12A or 12B (§ 178.210 or § 178.205 of this chapter). Fiberboard boxes with inside containers of polyethylene, or other nonfragile plastic material resistant to the lading (bags are not authorized), not over 1 gallon capacity each, suitably cushioned to prevent movement within the box. Gross weight of completed package must not exceed 65 pounds.

(16) Spec. 12A (§ 178.210 of this chapter). Fiberboard boxes with inside glass bottles not over 5 pints capacity each. Not more than six 5-pint glass bottles may be packed in one outside container. Shipper must have established that the completed package meets test requirements prescribed by § 178.210-10 of this chapter.

(17) Spec. 6D or 37M (nonreusable container) (§ 178.102 or 178.134 of this chapter). Cylindrical steel overpacks with inside spec. 2S, 2SL, 2T or 2TL (§ 178.35, 178.35a, 178.21 or 178.27 of this chapter) polyethylene container.

(18) Spec. 37P (§ 178.133 of this chapter). Steel drums constructed of at least 24-gauge metal for drums exceeding 1 gallon capacity, with polyethylene liner (nonreusable container).

(19) Spec. 16D (§ 178.187 of this chapter). Wirebound wooden overwrap, with inside spec. 2T, 2TL, 2S, or 2SL (§§ 178.21, 178.27, 178.35, or 178.35a of this chapter) polyethylene container.

(20) [Reserved]

(21) Spec. 12C (§ 178.206 of this chapter). Fiberboard boxes with inside 5gallon nominal capacity polyethylene bottles having minimum wall thickness of 0.015 inch and constructed with screwtype closures. Authorized gross weight not over 65 pounds. (See § 178.206-19 of this chapter.)

(22) Spec. 21P (§ 178.225 of this chapter). Fiber drum overpack with inside spec. 2T, 2S, 2SL, or 2U (§§ 178.21, 178.35, 178.35a, or 178.24 of this chapter) polyethylene container.

(23) Spec. 12P (§ 178.211 of this chapter). Fiberboard boxes with inside spec. 2U (§ 178.24 of this chapter) polyethylene containers not over 5 gallons capacity each. Wire staples are not authorized for assembly or closure of boxes, except when polyethylene container is completely enclosed in inside boxes free of wire staples or other projections that could cause failures.

(24) Spec. 16A (§ 178.185 of this chapter). Wirebound wooden box (see § 178.185-22 of this chapter) with inside specification 2U (§ 178.24 of this chapter) polyethylene container. The polyethylene container shall be separated from the wooden box by a complete corrugated fiberboard liner and top and bottom pads.

(25) Spec. 22C (§ 178.198 of this chapter). Plywood drum as prescribed by § 178.198-2(b), with inside spec. 2TL (§ 178.27 of this chapter) polyethylene container not over 5 gallon nominal capacity.

(26) Spec. 33A (§ 178.150 of this chapter). Polystyrene cases (nonreusable container) with inside glass bottles not over 5 pints capacity each. Not more than four 5-pint bottles may be packed in one outside container.

(27) Spec. 12R (§ 178.212 of this chapter). Paper-faced expanded polystyrene board boxes with inside glass bottles not over 5 pints capacity each. Not more than six 5-pint bottles shall be packed in one outside shipping container.

(28) Spec. 34 (§ 178.19 of this chapter). Polyethylene container without overpack, not over 30-gallons capacity.

(b) Hydrochloric acid of not over 20 percent strength (13.25° Baumé) and other corrosive liquids containing not over 20 percent hydrochloric acid in addition to containers prescribed in paragraph (a) of this section may be shipped in specification containers as follows:

(1) Spec. 10A (§ 178.155 of this chapter). Asphaltum-lined wooden barrels or kegs.

(2) Inside containers of not more than 8-fluid ounces capacity each, resistant to lading, packed in strong outside containers, and cushioned with absorbent material in sufficient quantity to completely absorb liquid contents in the event of breakage, are exempt from specification packaging, marking, and labeling requirements, except that marking name of contents on outside container is required for shipments via carrier by water. Shipments for transportation by highway carriers are exempt also from Part 177 of this chapter, except § 177.817, and Part 297 of this chapter.

(c) When hydrochloric acid contains oils or solvents it must not be shipped in containers or tank cars lined with rubber.

(d) Hydrochloric acid mixtures of not over 28 percent strength, or cleaning compounds, liquid, containing not over 28 percent hydrochloric (muriatic) acid, in addition to the provisions of paragraphs (a) and (b) of this section, may be packed in specification containers as follows:

(1) Spec. 12B (§ 178.205 of this chapter). Fiberboard boxes constructed of at least 275-pound test (Mullen or Cady) double-wall corrugated fiberboard or 325-pound test (Mullen or Cady) doublefaced corrugated fiberboard, with not more than 12 inside glass bottles, having acid-proof closures, of not over 32 ounces capacity each. Inside bottles must be separated and cushioned by suitable corrugated fiberboard partitions. The box must be equipped with top and bottom pads. (See § 178.205-32 of this chapter.)

glass

(2) Spec. 12A (§ 178.210 of this chapter). Fiberboard boxes with inside glass bottles not over 1 gallon capacity each. Not more than 4 inside containers exceeding 5 pints capacity each shall be in the outside container. Shipper must have established that the completed

(a) Hydrofluoric acid must be packed in specification containers as follows:

(1) Spec. 15A, 15B, 15C, 16A, or 19A (§§ 178.168, 178.169, 178.170, 178.185, or 178.190 of this chapter). Wooden boxes with inside containers of natural rubber, ceresine, lead, or other hydrofluoric acid resistant material. These containers are authorized only for strengths of acid for which they are adequate, but in no case may the strength of acid exceed 70 percent.

(2) Spec. 12B (§ 178.205 of this chapter). Fiberboard boxes with inside containers of natural rubber, lead, polyethylene, or other hydrofluoric acid resistant plastic not over one-pound capacity each. These containers are authorized only for strengths of acid for which they are adequate, but in no case shall the strength of acid exceed 70 percent.

(3) Spec. 16D (§ 178.187 of this chapter). Wirebound wooden overwrap, with inside spec. 2T (§ 178.21 of this chapter) polyethylene container. Authorized for hydrofluoric acid not over 70 percent strength.

(4) Spec. 12A or 12B (§ 178.210 or § 178.205 of this chapter). Fiberboard boxes with not more than 4 inside polyethylene bottles, having minimum 0.030 inch thickness of any part, not over 1gallon nominal capacity each. Bottle closures must be made secure by sealing with pressure-sensitive plastic tape or other equally efficient means. Authorized for acid not over 70 percent strength. Shipper must have established that spec. 12A completed package meets test requirements prescribed by § 178.210-10 of this chapter. Authorized gross weight for spec. 12B fiberboard boxes not over 65 pounds; spec. 12A not over 80 pounds.

(5) [Reserved]

(6) [Reserved]

(7) Spec. 5A (§ 178.81 of this chapter). Unlined metal barrels or drums which have been subjected to adequate passivation or neutralization process (see Note 1). Authorized only for acid of not less than 60 percent and not more than

80 percent strength and all containers must be filled to not over 80 percent of capacity at 68° F. If containers are washed out with water, they must be repassivated before reshipment. (See Notes 1, 2, 3, 4 and 5.)

NOTE 1: Each metal container, before being put into service must be passivated by an efficient method.

NOTE 2: Containers not exceeding 55 gallons capacity each are authorized for carload, truckload, less-than-carload, and lessthan-truckload shipment. Containers exceeding 55 gallons capacity each are authorized for carload or truckload shipments only but they must be loaded by consignor and unloaded by consignee.

NOTE 3: For less-than-carload or less-thantruckload shipments, containers must be of metal at least as heavy as 14 gauge United States standard for not over 20 gallons capacity each or 12 gauge for not over 55 gallons capacity each. Each container must be subjected to at least one of the following tests before shipment: By interior pressure of at least 15 pounds per square inch before filling or by holding for inspection for at least 24 hours after filling. In either case, each container must be vented prior to shipment.

NOTE 4: Because of the present emergency and until further order of the Commission, containers of not over 55-gallons capacity each, of 14-gauge metal, are authorized, provided test requirements of Note 3 are maintained and provided containers are retired from service after showing a 15 percent loss of tare weight.

NOTE 5: Hydrofluoric acid solutions and concentrations of 60 percent up to 65 percent, when shipped in unlined steel containers, must be inhibited so that the corrosive effect on steel must not be greater than that of hydrofluoric acid of 65 percent concentration.

(8) Spec. 103A, 103A-W, 105A100,1 105A100-W, 111A100-F-2, 111A100-W-2, 111A100-W-4, or ARA-IV1 (§§ 179.100, 179.101, 179.200, 179.201, of this chapter). Unlined metal tanks which have been subjected to adequate passivity or neutralization process. (See Note 1 to subparagraph (7) of this paragraph.) thorized only for acid of 60 to 80 percent strength. If tanks are washed out with water they must be resubjected to passivity before reshipment.

Au

NOTE 1: Hydrofluoric acid solutions and concentrations of 60 percent up to 65 percent, when shipped in unlined metal tank cars, must be inhibited so that the corrosive effect on steel must not be greater than that of hydrofluoric acid of 65 percent concentration.

1 Use of existing tank cars authorized, but new construction not authorized.