10 
BULLETIN 1813, U. S. DEPARTMENT OF AGRICULTURE 
TaBLE 2.—Formulex, molecular weights, boiling points, and lethal concentrations 
(from results in Table 1) of fumiganis 
Fumigant Formula 
HYDROCARBONS: 
INTMYIGNG 2: to eee , O11 5 (aaa Ses a 
Kerosene 22 ee IMIG UTC 2 ees re eg 
Cyclohexane___--__--_-- Cob ses. eee 
Benzeness {eee ees Ceblgieee te 2 ee 
Roluene= = eames eee CoH Gia fot Ae 
o-xylene2 cote 
Naphthalene 
Anthracene 
BROMIDES: 
(Bromoormssseens eee CEB ee te ee 
Ethyl bromide--_-_-_-_---- CoE Brae 2 2 eee 
Ethylene bromide ------ C@sbiiBrosee 2 2-2 ee 
n-Propy! bromide--_-_-__- C3 Briss. To a eee 
‘Allyl bromides= 222-2222 C3HG Breas 2. ee 
n-Butyl bromide---__-_-.- CO BIC BY ras aaa Py pet caper 
Bromobenzene-_--_----- (OEIE I) 5 ipa ea eae 8 
Benzy] bromide.-_------ Cpe CHE Brives 2 tae 
CHLORIDES: 
Methylene chloride_---_- OHb Chee). 
@hiorolormasse eon WH @) 32020 b Se ee 
Carbon tetrachloride =_|(C Cie a aes 
Acetylene dichloride..__| C2H2Cle__________.______- 
Ethylene chloride_-_-___- Cling: 2 ae 
Ethylidene chloride_-__| C2H4Cle__________________ 
‘Trichloroethane----__-_- OPiS XO] Eyes Sane Sn 
Trichloroethylene_--_-__- Coli sees.) ee 
‘Tetrachloroethane-_---_-_- (OFS 1 ©) ee es Spee SR 
Tetrachloroethylene _-_-__ ees A ERE EPR nepres BS 3 2 
Propylene dichloride -.-| C3HsCle___-__--_-_-_---_- 
Isopropy! chloride -_--_-_- (GEL) TCHGI penis rmeee Be 0 
Monochlorobenzene)2_- |: Cech O©l= = ee 
o-Dichlorobenzene--___- CeHU@Is2 2. 2 5.4 eee 
p-Dichlorobenzene= 2 | CG¢Hu@lo= =) 2-2. eee 
oand p-Dichlorobenzene] CsHiClz_-____--_---------- 
FLUORIDES: 
Fluorobenzene______-_-- CeiHGRi Sok ae 
Difluorodiphenyl___.__- CcHGH-ColHigh= eee 
IODIDEs: 
n-Butyliodide___..___-- (O77) 5 Ki) Reactor ae Se 
ALCOHOLS AND PHENOLS: 
Methyl alcohol________- CHE OH S322 2 aa 
thy lalcohola=s2s a CoHGOMR. 32250... ae 
m-Propyl alcohol________ C3Ey ORGS = 22s eee 
n-Butyl alcohol________- CiHGOHE = eee 
Isoamy] alcohol__._____- CHO tei. a 
Gerantole= 2 55232 Cob CHoOHE aaa 
(Bhiynroleses eantenceee (CH3)2CHCsH3(CH3) OH 
Menthol 22: phs senza atin SP KO) 5 laine pe apes Ns 
ALDEHYDES: 
Chloral hydrate__..___- CCLOHOR):= = 
n-Butyraldehyde--___--- (Onlel Ge kOe eres ses 
Crotonaldehyde._-_-_____- CHECH-CHCHO.__ == 
Murrells <span ChHROCH OR. 2). aa 
Benzaldehyde-_--_______- CcHECHOS22255 2. ee 
KETONES: 
‘Acetone ss 22 ee ore CHcCOCH = 
Chloroacetone____-__--_- CHI CICOCHs--. | a= 
Ethyl methyl ketone___| CoHs;COCH3__.__________- 
Mesityl oxide__._._-___- (CH3)2C-CHCOCH3_____- 
Acetophenone-_________- Crh; COCH::. 2. .aa= 
- phlcEgaretopnenene: =| (CgasCOCHsCl.- 2 --tsaee 
STER 
Methyl formates= == HCOOCHs+. 2 = aaa 
Ethyl formate__________ HCOO CH 2... 
Isopropyl formate ______ HCOOCH(CH3)2________- 
Methyl cyano formate__| CNCOOCH3_-_-_-__________ 
m-Propy] acetate________ CESCOOC3 H.-S 
n-Buty! acetate____-____ CEHECOO CAG =-. aes 
Isobuty] acetate_______- CHECOOC Hs. = 
Isoamy] acetate_________ CHECOOGC Hh. . tae 
Ethyl-n-valerate_...____ CHa COOC2H; == .-- 2 a 
1 Based on international atomic weight values for 1922. 
128. 114 
178. 150 
252. 773 
108. 970 
187. 882 
122. 991 
120. 975 
137. 012 
156. 990 
171.011 
84, 941 
119. 393 
153. 845 
96. 946 
98. 962 
98. 962 
133. 414 
131. 398 
167. 866 
165. 850 
112. 983 
78. 531 
112. 530 
146. 982 
146. 982 
146. 982 
96. 070 
190. 124 
184, 012 
32. 037 
46. 058 
60. 079 
74. 100 
88. 121 
154. 194 
150. 162 
156. 210 
165. 414 
72. 084 
70. 068 
Lethal concentration 3 
(molar percentage) 
Boiling : 
point? {| 571) alee aePlo- 
oryza | 979" bol- dia 
¢ arius | ium 
SOE 
22-3 lee 40.3 | 40.3 | 40.3 }------ 
150-280). 2 | a 38S tee See eee 
808222 2=-3/ 41350) /2135 02 13 Ores 
79-81______ 3.8] 3.8] 3.8] 13.0 
TOS-T1 O22 22 he sae ee Bs Ol Shares 
143 -5— 14475) |e Se ae eee 
218 se 2.2 Sa See Ee So ee eee 
Sob tes A] ae Ne ae ea ee 
142-151____ ONS SS a A ee a 
38-40_____- 2:9:148.0.| (2,9 Wee - 22 
ey ABY neo) 5% Sas ae 
“OSM ee st 4.1] 4 4a) pee 8 
69-71______ SO Fees ts 23.9) eee 
100-101____] 2.6 25 (e) 1G. eee See 
P54=155 22 2] ee Sees lee oe Se 
T98-199. - 2) Se meee es see ee 
40 5-A2. = = Lite AeA see See Ai4 jose 
58-6152. Ne eOl Ol ts. 2 deplon9 
6G bh ees 6597) 6.9 | 6.9 ie 
DO seers 9.0] 9.0] 9.0] 16.8 
83-84. = 2 G208 GRO M iter 6.0 
59.5-61.5__-| 10.2 | 10.2] 10.2] 10.2 
P(A Ne .8 3.8 tik 3.8 
85.5-87____ 10. 0; 10.0] 10.0) 10.0 
144-146____| 1.1 ek: iit heat 
119-121____| 2.6 AC 1 Lake Fal Se 
95-96_____- 5 | eee ep al | eee 
34-36.22 3 See ae SI ee ee ae 
12813255241 a eO ne 2s Oupeee 2.0 
PSB =1SE 2 Pa) ae eC OS ee | ees 
2ST Ao Al ASE oS | ee eet 
es TOs 2210 ee 1.0 
SAO 22 ag thay 2 Drees 
OA Asya ae) Pe aps S| eee ee (eres a 
129-131____ 8 -8 ROE Pi ee 
& Se eae ae 16.0 | 16.0] 16.0} 16.0 
96-98__..- lade |e ewan PS7/ ey 
ny as a | Se Py fs te cd bey al Et LEN 
130-132____ 8 8 .8 8 
2: Uae ened Peeper oes | reegin) ewe Ee 85 |e he ee 
228-2028 2) eae Ss S| eee eee 
3 | | ra et | PSNR | | RRS Ea SS ee 
O75 SA ee a ee eee 
(ham Aaya Pes ‘) 3.3 ae 
104-105. 2243 Gabe Ad | oy Se 
i Koy) roe 4.8 Com Meee eT Seed 
Ti Oi eA 4.3 4 3.. (zee oeo | Sere 
55-00L2 eee 82] 41 Aa tee 
117-119____ S26)! >. 26). = 26) 23e-=— 
9-80___.__ cial atone iat Serdil beat corks Ae 
130-131____ | ea 1.4? pw 
Ps 6 Ae rane $. 16ls eee oes eee 
24 (eee 0 22 ee 10 
31 5-32.02 ee 9 te Gol soon See 
Dose -6 4.6 Be ates 
63-64_____- EO), See <9 ee as 
100-101____ eh 7 wa 52, 
99-102_____ OSS | PAs 1.9 1.9 
§24-126- = 822 dee ee et 4,76 
D517 aS | ee ee 
138-140___- 9 -9 .9 .9 
144--145.5 <> ele ee ee ee 
2 The boiling points given are those of the substances as tested, not those of these compounds of the 
highest degree of purity. 
’ Thelethal concentration here reported represents the minimum percentage concentration which con- 
sistently caused 100 per cent mortality after exposure for 24 hours. 
Since in some cases the concentra- 
tions tested varied decidedly and because of some variationin the experimental results, the results here 
piven do not necessarily represent the exact minimum lethal concentration. 
4 Minimum concentration tested. 
