Document penwgVwdv6goJy7KDk8eadvZa

I v 11 March 4, 1969 Mr. Leon A. Woods Depcrtwcnt ol' Fioh and Qttine Pesticide Investigations 9u7 Jedawith Prlve kt ere went o, California 99^19 Peor Mr. Woods* J,In reply to your letter of February 2 I have enclosed a topic showing'the general physical properties? of our Aroclors. At the bottom of thle table I have added the results determined In oral toxicity studies with rata and the minimum lethal done of the Aroclors when applied to the shaven ekin of rabbits. You will notice that there ie a difference In the wanner In which the ample Is administered due to the physical form of the ample, its viscosity, solubility, etc. Ve believe that these data show that the Aroclors are not erlouaiy toxic from the standpoint of acute single exposure. A second enclosure is a reprint describing the results of chronic inhalation experiments on two of the Aroclors. This work hoe led to the establishment of a threshold limit value of 3.0 milligrams per cubic m^ter for Aroclor 1242 and 0.5 milligram per cubic meter for Aroclor 12$4. Perhaps I should point out that our designation of the Aroclors by numbers indicates the parent material and the degree of chlorine. For example th 1200 series are biphenyls chlorinated k2$jto various percentages. Thus, Aroclor 1242 is biphenyl chlorinated to the extent of Aroclor 12t>4 is biphenyl chlorinated to i>4^. The series beginning with the numerals 24 and 44 are DSW 018414 4l* STLCOPCB4004958 Mr. Leon A. Woods -2- March 4, 1969 blends of chlorine ted biphenyls end chlorinated trlphenyls. The ^4 scries are chlorine ted trlphenyls. All of the Aroclere are practically insoluble in water. For example Aroelor 124? ia soluble in water at 2J>C only to the ej'tent of 203 plus or minus 10 parte per billion; Aroelor 1248 106 plus or minus 14 ppt end Aroelor 1254 50 plus or minus 2 ppb. Obviously increasing the chlorine content decreases the solubility of the material. , If I can be of any further assistance# please let me know. Sincerely, .EPWjcJb Enclosures Elmer P. Wheeler Manager, EnvironmentalHealth bcc: W. R. Richard ' .P, C. Burgen . . f JL, .** ;*U S. Tucker .... J. E. Springgate L. H. Payton DSW G18415 y\ 4 STLCOPCB4004959 General Physical Properties of the Arcelor Chlorinated Compounds 1 * Form............................................................ Arodor 1221 Colorless mobite oil Color............................................................ Acidity -- Maximum (Mgm. KOH per Gm.)... Average Coefficient of Expansion -- cc/ce/*C Typical Density Specific Gravity......................................... Pounds per gallon -- 25*C(77*F)............... Distillation Range -- ASTM 0-20 (Mod.) Corr. C.................................................... 50 Max. (APHAi OJJH 0.00071 (15*^0*C) 1.182-1.192 (25715.5 "C) 9.85 275"-32G* Arodor 1232 Practically colorless mobile oit 50 Max. (APHA) 0.GL4 0.00073 (25-100C) 1.270-1.280 (2SV15.5*C) 10.55 29Q*-325* Arodor 1242 Practically colorless mobile oil 50 Max. (APHA) 0.010 0.00068 (25*-65*C) I.381-1.392 (25715.5*0 II.50 325*-36S* Arodor 124$ Cotor'ess to light yellowgreen. dear, mobiie oil 50 Max. (APHA) 0.010 0.00070 (25*-65C> 1.405-1.415 (65715.5*0 12.04 340-375* Arodor 1254-" Light yellow* viscous oil f i Vi Aroclor 1260 Light yellow . . .f. soft sticky aL\.resin 50 (APHAp~fc^ 50 max. - APHA) 0.010 0.00066 (2S*-6$*0 1.495-1* (657158*9 12.82 l' i MM !V 0.00087. 4\,v( (23*-100*C) \ 1.555-1.565 (90715.5*0) ' 13.50 ' 365--3S*- ^ 385-420* Aroclor 12$2 Light yellow sticky dear resin 50 Max. (APHA) 0.014 0.0D064 (25*-6S*C) . 1.572-1.583 (90/15.5*C) 13.72 Arodor 1268 White to off-white powder 1.5 Max. NPA (molten) 0.05 0.00067 (20*400*C) 1.804-1.811 (25725*0 15.09 395*425* * 435*450* Arodor 4465 Light-yellow, dear, brittle: resin ' 2 Max. , NPA (rr.cltcr) 0.05 0.00061 (25*-S5*C) 1.570 (25725*C) 13.91 2307320* at 4 mm. Hg. Aroclor 5442 Yellow trans parent sticky resin 2 Max. NPA {molten} 0.05 0.00123 (25-99*C) 1.470 (25*/25*C) 12.24 215* 300* at 4 mm. Hg. Arodor 5460 Clear, yellowto-amber, brittle resin 2 Max. NPA (molten) 0.05 0.00179 (25*424*0 1.670 (25725*0 13.91 280*-33S* at 5 mm. Hg. Arodor 2565 Black, opaque, brittle resin - 1.4 0.00065 {25*-55C) 1.734 (25725*0 14.44 - Evaporation Loss -- % -- ASTM 0-6 Mod. . 163"C............................................... 5 hr*100"C............................................... 6 hre. 1.0 to 1.5 1.0 to 1.5 3.0 to 3.6 0.0 to 0.4 3.0 to 4.0 0.0 to 0.3 1.1 to tl 0.0 to 3.2 % 0.5 to 0.8 .; ^ 0.0 to 0.1 0.5 to 0.6 0.0 to 0.1 ' 0.1 to 0.2 0.0 to 0.06 ' 021*0.3 0.0 to 0.02 0.2 0.01 Flash Point -- Cleveland Open Cup............*C . *F 141 *-150* 28S*-202* Fire Point -- Cleveland Open Cup............. *C *F 176* 349* Poyr Point -- ASTM D-97......................... X *F . Crystals at 1*C Crystals at 34*F 152M54* 305*-3IQ* 238* 460* -353* -32* 17SM80* 34$*-3S6* None* -19* 2** 193M96* 379-384* Nona --7* 19.4' None None . None { *4 <? 4^ None None None ... l?^3i.4iSA 31. ' SO___________ Lr-wunnir * . ----- ----------- --------- 35*-38 99* . None Nona None None - - 247* 477* >350* >662* 46* 115* Softening Point -- ASTM E-28...................X - -- *F _ -- w ii 150*to 170 60* to 66* 46" to 52* (hold pi) - 302* to 338* 140* to 151* 115* to 126* ' (hold pi) Refractive Index -- Online -- 20"C................ Viscosity -- Sayboft Universal 210*? (98.9*C) Sec (ASTM - 0-83) 130*? (54.4*C) 1.617*1.618 30-31 35-37 ` 1.620-1.622 31-32 39-41 1.627-1.629 34-35 49-56 1.630-1.631 36-17 73-SQ 1.639-1.5$' ------------------ u-ts S 260-340 ^ M 1.547-1.549 n-JEP72-75 1.6501-1.6517 - SU0t0o--8rSw0 X71 1 1.664-1.667 90-150 raw*;- j3o*cj - 100? (37.8*C) 3S-41 44-51 82-92 185-240 1500-2600? i p: --i-----"ffig/kg Oral LDc3-rat3 (approx.; 3930* H4TO* Skin KLD-rabblts-sgAs > .2000* > `.260* ------------agrlnlsiorg^---------------c-uy-go*------- f TOO-O*-- 8650* > jou* 11,000* 1> 79^* ll,90<i* > 1260+ ^e-v- 10,000** 11,300** 1260** >t2:'a2*- >1260** _-r.3I.6r>!L L 0.0% scln. in corn oil undiluted ** administered as S0 sol.n. in torn oil # 331/3> In corn oil 4t tjaiC. 10,900** 16,000** >2510#;?# >2000** < 3160** . 10,600** >1260** <2000** ### 10# soln. in corn oil 0.03 1.5 to 1.7 <at 260*--5 hr*.) None None 0.2 to 03 None None --\ \ S8" to 105.5* ' 208* to 222* 1.660-1.665 56*to 72* 149* to 162* - 19,200# >79*10# > 2000## <3160 OSW 018416