2 
a 2 ee ge 
20 BULLETIN 145, U. S. DEPARTMENT OF AGRICULTURE. 
TABLE 6.—Corrosive action of the preservatives. 
Loss in weight of flange é 
WASHINGTON : GOVERNMENT PRINTING OFFICH : 1915 4 
enn é Steel after immersion in 
tise Nae Preservative designated by cooperator as— preservative for 4 weeks 
vies at 98°C. in ounces per 
square foot per week. 
5 Pe ae ayer es | iO ONL=LAT: CHOOSO LEYS sitters re See ore ee aoe erie et a eee | Less than 0.085. 
ae ea Coal-tarcreoscole, Wlachiony les --: pe spam yaaa ee eee eee Do. 
EEE Ds ais oo Coal-tar creosote sNrachlonullas 2 twee meee eee ae ae meee tom meee Do. 
_ ee Bee") Goal-tanccroosotes Rraction Tlie ees oe ee ee ee Do. ; 
See eae | Coal-tar creosote, HATA CHIOT AV 2 ee ore ie ans ond ae era Do. 
(Sea Bewrs Coai-tar creosote, ITACEIONS Vecsey gece ean: Se a nee Do. 2 
aE ese Water-gas-tar creosote, LOD ape, See cas Se oie ey Do. ; 
$2252.55 Se Water-gas-tar creosote, DE OUD ier es ei ae Ao eel ts iene nce Do. 
Oras eee Water-gas-tar creosote, TO (ces cae tees me eae eee Between 0.005 and 0.010. 
51 ee ees Seep ASH Gar Olin erie sic es oe re ee ee a ec erase ng er Less than 0.005. 
1 eobeee AW CNATIUS CAnDOMNECUTINS se semaeias sae eae ee eae Between 0.010 and 0.025. 4 
5? ane oe (CURAEE V7 OOGIDLCSCL VEL el nacre Ace acid ene cent eee ap pee reema| Less than 0.005. j 
i 5 Ree Fler dwOOGitanes eae eae nance os Seen ee Dee Ree ere ENE Between 1.900 and 2.006. 
EA en ae Woods tare (CD OUelas! fir) oa se tao esse a cree | Between 1.200 and 1.300. 
ORE t pene es IB eGeCh WOOdiCLEOSOLE Es 2s. hate ecrok eee etre eee ee ae ae eee Between 0.400 and 0.450. 
I © ogee ee Spirittine=2 2 323 ips Fs dae nag tere Mats ee RON i tea eae ES Between 0.200 and 0.250. 
1 fee epee tee IP TOSEIV OLE Sere Wes eee FFA Pe a oe mata Oe LY AA eR Bie | Between 1.100 and 1.200. 
Lee oe Wioodicreasoteolls 5 seer ne ie aay eae ee No tests made. s 
: | ea eA PIT ELAS PUALG eer sess os ae oe ee ee ee re eee Between 0.050 and 0.100. : 
See eee COMPELIZE GOUT Se ie Rae scala See Oe ae ee es | Less than 0.005. 
Bist Fe 1B Ie) (oy te Re or i ee Poe es Ee eh Aiea re Riel Do. $ 
2225. F: 2 se A TEES COS) ale Raed en Se ed aan I Mase ey ton GAT Do. 5 
BS aaa ee Zine chloride 2.4 percents. 2s eee woe ore ee ee Between 0.300 and 0.350. 
24 eee Zine sulphate, 4/5 Menicente Gok. ees ee ee Se eee Between 0.100 and 0.150. 
> ene Zine sulphate (by-product), feos DORCEN Geen eee see eee reer Do. 
(oi pe emriee B. M. preservative, 2 per cent zinc and 1 per cent alum sulphate..| Between 0.700 and 0.750. 
ot sere SAP WOOGANUISCDLIC Foose secu csishts  clnwcrtceme Wana ee oo eee nee Not tested quantitatively; 
copper all thrown out In 
- a few minutes. 
DNs Sea SOGTUIMISTIICA TSS sts aii Fe a Lat NR SRE ge ene at eee ere Decomposed at tempera- 
ture of test. 
5 Se eee Sodiambfluoride ll pericents--- sass tees eee ee eee Between 0.025 and 0.050. 
E |) Ree ee Cresolval nine st ase oe esos oak ae ee ee eee Less than 0.005. 
TABLE 7.—Discoloration of wood treated with preservatives and painted. , 
Preservative Preservative designated by Condition of painted surface after exposure E 
No. cooperator as— for 1 month. | 
eee Coal-taicreosotesernce. seen tee ee Very badly discolored and paint not dry. : 
Bret ss Coal-tar creosote, Fraction I........-.- Slightly yellow in spots; paint dry. J 
Eee Coal-tar creosote, Fraction II......... Very badly discolored; paint nearly dry. 3 
te eee Coal-tar creosote, Hraction lls =e ae. Do. 4 
( Sigeeaeaie agree Coal-tar creosote, Wraction UNE 2= sees Do. 
SEG St eae Coal-tar creosote, HractionyVe-cc-- ers Very badly discolored; paint not dry. 
eee eae Water-gas-tar creosote, AOS. eeesee Very badly discolored, and sticky in spots. i 
Seace ass oe W ater-gas-tar creosote, TOLD 02 see Slightly discolored; paint somewhat sticky. : 
Laas eee Water-gas-tar creosote, DOF ORs reas Very badly discolored; paint not dry. ! 
1S: eee ee Soe Ee aCarbOlineuimseee ss eseee eee Do. : 
| beep pee Avenarius carbolineum.......-.--.- | Do. 4 
Te Buca CO: AAwoodpreserver:® .-<.-2 3.2/2.2 28 | Do. i 
Te tee ete ard woodsbaree sas ese ose. ee Do. 7 
i 5 Dh eae Wiood'tariCDouglas fin) sos 2 as. o- ae Do. 
1 Sopeeneane Beechwood credsotens-see = 2s ee Discolore 8 gray; oil penetrated paint coating in sev- 
era ¢ 
GS eer a | ODINILbINO 7 hoo. at as os ela ae ae slightly a diccoloret: paint sticky in spots. 
5 oS para ee IPTESCIV OLE. eee et se eet eee ae Paint discolored and collected in spots, leaving sur- 
face partly bare; still very wet. 
15 eae ae Wiood creosote) Otley ee Badly discolored; paint not dry. 
[eo Be ape eee Pimiberasphalt 58 22 5.0.4. oer eee Very badly, discolored; paint ‘ie, but did not stick 
to woo 
| 73 ee a eal Copperized oil: -s:6.22. ests ee Discolored; paint somewhat sticky. 
ay Piece a2 4222: Ue OUe a tee coe ces | See ees Slightly yellow in spots; paint slightly sticky. 
| 5 eee ee ECOSENO nee ee Stefan ee Lee ee Slightly yellow in spots; paint dr 
ry 7A eS eee HaAncicinloridel:: see see ee ea ee Appearance similar to untreated specimen. 
ah ae ee een ZANE SuUlp hater ss =e eee ae oe aes Do. 
Bi Diy or rae on Zine sulphate aero Sor es see Do. 
BL Diente ae BM spreservabive....0- 2 sc4 ceo Do. 
Vinten eee Sapwood antiseptic........-- Se rere No test made. 
ei 28 Seay soe se Sodimmysilicaieseeseu ss eee 3a Slightly discolored. 
if | 72) ase SOMME UOLIAS 252 eee es ee ee Appearance similar to untreated specimen. 
f BOS sesso Cresolivalenmmn x82 See a ae ee Discolored, pale yellow, and somewhat sticky. 
