6 
BULLETIN 1312, U. S. DEPARTMENT OF AGRICULTURE 
the calcium hydroxide dust was 80 per cent and the minimum loss 
from the dust of highest nicotine content, packed in the glass container, 
was less than 10 per cent during storage for 20 months. 
The calcium 
carbonate dust lost more than any of the other nicotine sulphate dusts, 
the loss ranging from a maximum of 86 per cent to a minimum of 13 
per cent during the 19-month storage period. 
Tables 7, 8, 9, and 10 give the results of analyses of dusts prepared 
and packed in the same manner as the dusts already considered, 
except that free nicotine solution was substituted for nicotine sulphate 
These results cover a maximum period of storage of 12 
months except in the case of free nicotine-kieselguhr dust, which ran 
solution. 
for 19 months. 
used. 
Date of 
analysis 
Date of 
analysis 
Date of 
analysis 
Kaolin and talcum, being poor absorbents, were not 
TABLE 7.—WNicotine in free nicotine-kieselguhr dust 
Strength 1 
pie | Paraf- Can- 
board | fined ae vas 
box box J bag 
Per ct.| Per ct. | Per ct. | Per ct. 
8.06} 8.06] 8.06] 8.06 
ho Odale Ao Oiled) a SOE. 6. 90 
4.541 5.30] 7.20] 3.7 
3.86 | 4.65 | 6.99 | 3.42 
2.87 | 3.71] 6.39] 2.66 
Can- 
vas 
bag 
Strength 2 
Paste-| Paraf- 
| board | fined Ss 
box | box | J 
Per ct. | Per ct.| Per ct. 
5. 56 5. 56 5. 56 
5.05 | 5.30] 5.41 
4.00 | 4.52] 5.00 
3.39 | 4.07 | 4.72 
2:83 | 3.00.1 - 4.18 
TABLE 8.—WNicotine in free nicotine-calcium carbonate dust 
Strength 1 
Paste-} Paraf- Can- 
board | fined Glass vas 
box | box J bag 
Per ct. |Perct. | Per ct. | Per ct. 
7.43 | 7.43 | 7.48 | 7.48 
6.50 | 6.55! 7.00] 5.04 
4, 27 4.14 6. 87 4.09 
O02 |e 6. 55 3. 11 
2.97 3. 54 6. 26 1. 94 
Strength 2 
Paste- | Paraf-| 4, 
| board | fined Clas 
box box J 
Per ct. | Per ct. | Per ct. 
4.70 | 4.70] 4.70 
3.40 | 3.42] 4.48 
2°51 | = 2782 || 39 
2.02 | 2.06] 4.02 
1.40 1.58 3. 56 
TABLE 9.—WNicotine in free nicotine-plaster of Paris dust 
Strength 1 
Paste-| Paraf- Can- 
board | fined ee vas 
box box J bag 
Per ct.| Per ct. | Per ct. | Per ct. 
6.18 | 6.18] 6.18] 6.18 
5. 49 6. 05 6.12 3. 52 
4.50} 518) 6.04] 3.11 
3.08] 441] 5.91 ].2.18 
15 724i FR 55 WES. SB .35 
—E—— SS sss SSS SS ES SSS Se 
Strength 2 
Glass 
fined | F 
box Jar 
Per ct. | Per ct. 
3.80 | 3.80 
ayy fs wea 
3.20} 3.70 
2.48 | 3.51 
1.84 | 3.12 
Strength 3 
Paste Paraf- Can- 
board | fined | G85 | Vas 
box | box J bag 
Per ct.| Per ct.| Per ct. | Per ct. 
3.94] 3.94] 3.94 3. 94 
2.81 | 3.44] 3.88 3.17 
2 26"| “ 2°36:)\_ 3:-72 pee) 
1.96 2. 28 3. 66 1.42 
1.34] 1.49] 3.09 . 65 
Strength 3 
Paste-} Paraf- Can- 
board | fined Ges vas 
box | box | J bag 
Per ct. | Per ct. | Per ct. | Per ct. 
2.05 | 205] 2.05 2. 05 
a estryg fen Beit a Sr ES 1.35 
4993 4 4 SO lard es 1. 04 
1.05 | 1.08] 1.70 .95 
. 64 43 1. 55 ai) | 
Strength 3 
Pp | Cc 4 
aste- Paraf- an- 
board | fined a vas 
box box Ja bag 
Per ct.| Per ct.| Per ct. | Per ct. 
1.62] 1.62] 1.62 1. 62 
f. $3. | 250s oF . 68 
1.09 agit 1. 38 . 74 
. 68 3 10-1-, 4a26 . 51 
S22 L22 1. 03 13 
