=«=
W&c&a&t*t& B Y RICHARD W.
ICC Amends Régulations for Transportation of Dangerous Articles O n Augusi 19 t h e I C C a p p r o v e d certain a m e n d m e n t s to its regulations f' · the transportation of dangerous articles. T h e s e a m e n d m e n t s were published in a notice issued J u n e 27. Those c h a n g e s of i n t e r e s t to t h e chemical i n d u s t r y are s u m m a r i z e d as follows: 1. Sec. 103, 110 Cyclohexane lias been a d d e d to t h e list of inflammable liquids. 2. Sec. 103, 110 Vinyl Acetate h a s been a d d e d to t h e list of inflammable liquids. 3. Sec. 103, 110 Vinyl idena Chloride, inhibited h a s been added to t h e list of inflammable liquids. 4. Sec. 50 Desensitized Liquid X itroglycerin has been included in t h e list of dangerous explosives which are forbidden for s h i p m e n t by rail. T h i s material may be shipped in Spec. M C 200 motor vehicles o t h e r than c o m m o n carriers. Λ specifica tion for this type vehicle, including indi vidual containers, has been issued. 5. Sec. 105 A Acrolein has been re classified from a Class Λ poison t o an inflammable liquid. I t cannot b e shipped uninhibited and m u s t be packed in Spec. δ A metal d r u m s n o t over 5 5 gal. capacity. Express s h i p m e n t s are prohibited. 6. Sec. 261A (G) Formic Acid. Spec. I D boxed glass carboys of n o t o v e r 6.5 gal. capacity h a v e been added to t h e list of approved containers. M e a n s shall be pro vided to p r e v e n t pressure in b o t t l e s ex ceeding 10 l b . p e r sq. in. gage at 130° F. by venting or other means. 7. Sec. 262 (A) Hydrobromic Acid of 4 9 % s t r e n g t h m a y be shipped in con tainers as a u t h o r i z e d . S h i p m e n t s \\\ these containers was formerly limited to acid of 4 S % strength. S. Sec. 27? (F) (M) Sulfuric Acid of not over 1.4 sp. gr. (42° Bé.) m a y now be shipped in Spec. 103B, a n d " Spec. 103B-W t a n k cars, a n d / o r Spec. M C 310 t a n k motor vehicles in addition to previously authorized containers. ft. Sec. 303 (K) and (Q) (1) Methyl Chloride m a y now be filled to S 4 % maxim u m filling density (was 7ô%) in the presently a u t h o r i z e d cylinders a n d tank cars. C o n t a i n e r s must, be e q u i p p e d with approved s a f e t y devices. 10. Sec. 303 (Q) (?) Liquefied Gases except Crude Nitrogen Fertilizer Solution, Fertilizer Ammoniating Solution Containing Free Ammonia and j\îethy! Chloride. The regulation limits t h e loading to 60,000 lb. in t a n k s m o u n t e d on one car s t r u c t u r e with t h e following exceptions: Provided t h a t for single-unit t a n k car t a n k s having wafer weight capacities notless t h a n 86,240 lb. nor over 90,640 lb., lagged with 4 inches of corkboard, equipped \vith one or more safety valves s e t t o open a t a pressure of 225 lb. p e r sq. inch the t o t a l discharge capacity of which m u s t be sufficient t o p r e v e n t building u p of pressure in the t a n k in excess of 225 lb. per sq. inch, m o u n t e d on one car s t r u c t u r e , t a n k j a c k e t s stenciled ICC-105A300 if t a n k s are forge-welded a n d ÎCC-105A3 0 0 W if t a n k s are fusion-welded, a n d in all o t h e r respects constructed a n d main2402
=$=
LAHEY
t a i n e d in full compliance with I C C s h i p ping container specification 105A500 or 105A500W, the maximum q u a n t i t y of liquefied chlorine g a s loaded into such t a n k s m u s t be a t least 107,S00 lb. a n d n o t more t h a n 110,0001b; 11. Sec. 346 (F) {H) Methyl Bromide. O u t a g e m u s t be sufficient to p r e v e n t cylinders o r spheres from becoming e n tirely filled with liquid a t 130° F . a n d when t h e v a c a n t space (outage) is charged with nitrogen, carbon dioxide, or a i r t h e pressure in t h e cylinder or sphere a t 130° F . m u s t not exceed 5 /, the m a r k e d service pressure of t h e cylinder or sphere. 12. See. Sod (Ά) Λ rseriieal Dust, Arseni cal Flue Dust and Other Poisonous Noncoinbustible By-Product Dusts from Metal Recovery Operations m a y now be s h i p p e d in sift-proof box cars of all steel construc tion only when said cars are assigned exclusively t o t h i s service. 13. Sec. 357 {A) (?) and (A) (10) Cyanides and. Cyanide Mixtures can now be shipped in bulk in w a t e r t i g h t con t a i n e r car m e t a l containers in addition to presently authorized containers. In a d d i tion, t h e requirement that bulk s h i p m e n t s in metal-bodied covered motor vehicles be a i r t i g h t was changed t o " w a t e r t i g h t " 14- Spec. SA A Cylinders. A new Specification N o . 3AA for cylinders fab ricated from steel commercially known as 4130X, N E S 6 3 0 , 9115, 9125, 9115X, 912ÔX or i n t e r m e d i a t e manganese with yield point over 7 0 % of tensile s t r e n g t h has been a d o p t e d . IS. Spec. 4D Inside Containers Welded Steel Spheres for Aircraft Use. A new specification modeled after Spec. 3A Cylinders h a s been a d o p t e d . T h e maxim u m size is 1,100 cu. inch capacity a n d t h e service pressure must be a t leas-t 300 lb. b u t n o t over 500 lb. per sq. inch. The m i n i m u m wall thickness is set a t 0.040 inch a n d t h e wall stress m i n i m u m shall not exceed 24,000 lb. per sq. inch. ^ 16. Spec. 10A Tight Wooden Barrels. T h e use of beech, sweet birch, yellow birch or sugar (hard) maple s t a v e s is a p p r o v e d for fabrical ing these barrels. T h e order should b e consulted for t h e complete details of these a m e n d m e n t s .
ΟΡΑ Prices art Barrels, KegsD and
Drnms
Inquiries from t r a d e sources dealing in used slack wooden barrels a n d K,%gs, used tight wooden barrels and kegs, a n d used steel d r u m s concerning prices and s t a t u s of c o n t r a c t s negotiated while price con trol w a s in abeyance, fcp.vc p r o m p t e d t h e following s t a t e m e n t from t h e ΟΡΑ. All ceilings go back to where t h e y were on J u n e 30. All industries a n d businesses, buyers, and sellers covered b y ΟΡΑ price schedules, regulations, or orders on J u n e 30, automatically' became subject to those same regulations on J u l y 25 a s if the new act h a d become law o n June 30. T r a n s a c t i o n s completed between J u n e 30 a n d J u l y 25 a t overceiling prices a r e not considered violations. Deliveries m a d e C H E M I C A L
after resumption of price control on July 25 a t prices in excess of the seller's ceiling price a t the time of delivery do constitute violations. Ceiling prices for these.items are established u n d e r M P R 524, M P R 593, aiTd R M P U 4 3 .
Wax Flexibility Improved by Polybutene According to a recent bulletin of t h e Technical Association of t h e P u l p and P a p e r I n d u s t r y , it has been found t h a t polybutene or " t e r v a n " when blended with w a x modifies its crystallinity to t h e extent t h a t i t becomes more flexible. It is a hydrocarbon which lias rubberlike charac teristics. I t s a m o r p h o u s form and lack of a definite melting point m a k e s mixing difficult iîi paper-converting plants. It is therefore blended b y S t a n d a r d Oil Co., N . J., with wax on a large scale to produce commercial grades capable of extensive dilution with additional paraffin wax by t h e converter in t h e e q u i p m e n t now used for paraffin wax. It is used a s a l a m i n a t i n g medium for waxed paper and chipboard as well as other papers. I n asphalt-coated a n d laminated papers, the addition of paraffin wax to asphalt lowers its viscosity, permitting easier c o a t i n g as well a s imr-ioving its m v p . Its use was, however, always limited by poor compatibility; t h e paraffin wax t e n d e d to " b l o o m " o u t after coating. T e r v a n (349 or 449) a d d e d in required a m o u n t s with the paraffin wax corrects this a n d improves t h e water vapor resistance of t h e sheet.
Spray
Web
Packaging
A new method for preserving and storing i n d u s t r i a l e q u i p m e n t b y a plastic packaging process was d e m o n s t r a t e d recently at C a m d e n , N". J., by t h e R . M. Hollingshead C o r p . Essentially, the process consists of enveloping t h e equipment by the application of several coatings of a sprayed plastic on a webbing enclosing the m a chine. T h e plastic is a modified film-forming; vinyl resin carried in volatile solvents. In application, an initial spray operation bridges openings with long weblike filam e n t s t h a t completely enclose t h e object. S u b s e q u e n t s p r a y applications produce a p a c k a g e impervious to moisture and the e l e m e n t s , according to t h e company. *·. iarge machine employed in canning o p ' ; tions w a s used for t h e demonstrat i o n . All s h a r p projections on the machine were covered with pads. Pressuresensitive tape was applied in strips conn e c t i n g the outer projections of the m a c h i n e , first vertically, then horiz o n t a l l y . After t h e several s p r a y coats h a d been applied, an a l u m i n u m spray final coating was used t o reflect t h e sun's rays. Two weeks' submersion in water caused n o a p p a r e n t damage. A N D
ENGINEERING
NEWS
