US1014742A - Method of manufacturing arsenate of lead. - Google Patents
Method of manufacturing arsenate of lead. Download PDFInfo
- Publication number
- US1014742A US1014742A US63244611A US1911632446A US1014742A US 1014742 A US1014742 A US 1014742A US 63244611 A US63244611 A US 63244611A US 1911632446 A US1911632446 A US 1911632446A US 1014742 A US1014742 A US 1014742A
- Authority
- US
- United States
- Prior art keywords
- arsenate
- lead
- chlorid
- solution
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- UWRBYRMOUPAKLM-UHFFFAOYSA-L lead arsenate Chemical compound [Pb+2].O[As]([O-])([O-])=O UWRBYRMOUPAKLM-UHFFFAOYSA-L 0.000 title description 15
- 238000004519 manufacturing process Methods 0.000 title description 7
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 20
- 229940000489 arsenate Drugs 0.000 description 17
- 238000000034 method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- MHUWZNTUIIFHAS-XPWSMXQVSA-N 9-octadecenoic acid 1-[(phosphonoxy)methyl]-1,2-ethanediyl ester Chemical compound CCCCCCCC\C=C\CCCCCCCC(=O)OCC(COP(O)(O)=O)OC(=O)CCCCCCC\C=C\CCCCCCCC MHUWZNTUIIFHAS-XPWSMXQVSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 229940047047 sodium arsenate Drugs 0.000 description 4
- 239000011734 sodium Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 208000001836 Firesetting Behavior Diseases 0.000 description 1
- 241000370541 Idia Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 125000000223 arsonoyl group Chemical group [H][As](*)(*)=O 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/007—Halides
Definitions
- MICHIGAN MICHIGAN, riSSIGNOE '10 THESDOW CHEMICAL COMPANY, OF MIDLAND, MICHIGAN, A COBPOBATION OF MICHIGAN.
- the solid lead chlorid obtained It has been found that by stirring such mixact upon the soluble arsenate to. form the from any convenient source, is mixed in with a solution-0f a suitable arsenate, but in the presence of water insufiicient in amount to dissolve the lead chlorid.
- Such chlorid is preferably utilized in finely divided form. rather than in the coarsely crystalline form.
- the charge is run to a filter, or filter press, and the" excess of water-thereby removed, the arsenate being left in a paste ofthe desired consistency If desired, of,
- the mixture constituting the charge may separation step.
- the method of making lead arsenate which consists in mixing solid lead chlorid in finely divided form With a solution of a soluble arson-ate, the quantity of Water pres ent being insuflicient to dissolve said chlorid;
- the method of making lead arsenate which consists in mixing solid lead chlorid in finely divided form with a solution of acid sodium ai 'senate, the quantity of water present being insutficient to dissolve said chlorid; subjecting the mixture to prolonged stirring, whereby lead arsenate is formed; and then separating such arsenate from the solution.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
45 3 sented by the following equation To all ichom it may concern: ,"Be'it known that I, EDWIN o. sassrow, or MIDLAND,
enwm
MICHIGAN, riSSIGNOE '10 THESDOW CHEMICAL COMPANY, OF MIDLAND, MICHIGAN, A COBPOBATION OF MICHIGAN.
METHOD OF IdiA lN'UFAC-TURING ABSENA'IE F LEAD.
1,014,742. 30 Drawing.
Specification of Letters Eatent.
, Patented Jan. 16,1912.
0. Bans'row,
a citizen ofthe United States, and a resident of Midland, county of'Midland, and
tinguish it from other inventions.
" "EState .of Michigan,
have invented a new and useful Improvement in Methods of ii -,,Mauufacturing Arsenate of Lead, of which fthelfollowing is. a specification, the principle ofthe invention being herein explained and the best mode in which I have contemplated applying that principle, so as to dis- The improved method, or process, of man-- ufacturing lead arsenate in hand, involves the precipitation of a soluble arsenate solution,.as for example, sodium arsenate solution, by means of solid lead chlorid.
The several steps involved in carrying out the present process will be hereinafter fully claims.
described and particularly pointed outin the I The. following description sets forth in i detail an approved mode of carrying out the invention, such disclosed mode, however, constituting but one of the several ways in which the principle of the inven- .tion may be used.
In accordance with the present methodof I procedure, the solid lead chlorid, obtained It has been found that by stirring such mixact upon the soluble arsenate to. form the from any convenient source, is mixed in with a solution-0f a suitable arsenate, but in the presence of water insufiicient in amount to dissolve the lead chlorid. Such chlorid is preferably utilized in finely divided form. rather than in the coarsely crystalline form.
ture for a longer time than necessary where solutions are used, the lead chlorid will reinsoluble lead arsenate. The exact composition of the precipitate obtained by such reaction is dependent upon the ratio of base to arsenate in the arsenate solution. When' sufficient base is present, normal lead arsenate Pb,(AsO is obtained as reprewhile if lessof such base is presentfa lead arsenate lugher 1n arsenlc is produced; One reactlon, which occurs when notg'enough' 1; base is present to produce a normal arsenate, is represented by the following equation ess,
Application and June 10, 1911. serial a... 882,446.
mercial sodium arsenate, which is a convenient soluble arsenate for usein this procis usually a mixture of arsenates, containing both acid arsenates Na,HAsO, and NaH AsO If the normal lead arsenate is desired, a certain amount of a suitable alkali, such as'soda ash Na,CO,, should be added, the proper amount of such alkali" being such as will be the equivalent of the hydrogenv in the arsenate, or mixture of acid arseuates above referred to. This soda ash does not necessarily go immediately into combination with the acid arsenate, since the disodium. arsenate will not react. The efiect, however, after the lead chlorid has be'en-added,-is the same as though both acid arsenates had been at once converted into the normal arsenate.
It might appear at first sight that the re action between the soild lead chlorid and soluble arsenate could not be carried to completion, because, the resulting product being soild, all of the lead chlorid would not be reacted upon, but particles of it would be inclosed in an impervious coating of the lead arscnate. This tendency, however, it has been discovered can be successfully overcome by subjecting the mixture to prolonged stirring or agitation. This operation can be satisfactorily conducted in a wooden tank provided with a suitable stirrer and with the solution so'concentrated that the resulting mass has the consistency of a thick cream.
Afterthe conversion of the lead chlorid into the arsenate is complete, the charge is run to a filter, or filter press, and the" excess of water-thereby removed, the arsenate being left in a paste ofthe desired consistency If desired, of,
to meet the requirements. course, the mixture constituting the charge may separation step.
' Other modes 'of applying the 1 9 my invention may be employed instea be allowed to settlepreliminarily'tothls the'one explained, change being'made'a -H gardsthe process herein disclosed, the step. or steps statedby any. one of the}.
following claims or the equivalent such statedste or steps be employed. g I there ore particularly point out and dis-, I
tinctly claim as my invention 1. In a method of making lead arsenate, the. step which consists inmixing solid lead chlorid with'soluble arsenate in the presence of water insutficient to dissolve said chlorid. 2. Inv a method of making leadarsenate,
the step which consists in mixing lead chlorid with sodium ai'senate in the presence of water: insufiicient to dissolve said chlorid.
3. In a method of niaking'lead arsenate, the step which consists in mixing lead LlllOlld with. acid sodium arsenate in the presence of water insuflicient to dissolve said chlorid.
at. The method of making lead arsenate, which consists in mixing solid lead chlorid in finely divided form With a solution of a soluble arson-ate, the quantity of Water pres ent being insuflicient to dissolve said chlorid;
subjecting the mixture to prolonged stirring, whereby lead arsenate is formed; and then separating such arsenate from the solution.
5. The method of making lead arsenate, which consists in mixing solid lead chlorid in finely divided form with a solution. of
sodium arsenate, the quantity of Water pres ent being insufiicient to dissolve said chlorid; subjecting the mixture to prolonged stirring, whereby lead ai'senate is formed; and then separating such ai'senate from the solution.
6. The method of making lead arsenate, which consists in mixing solid lead chlorid in finely divided form with a solution of acid sodium ai 'senate, the quantity of water present being insutficient to dissolve said chlorid; subjecting the mixture to prolonged stirring, whereby lead arsenate is formed; and then separating such arsenate from the solution.
Signed by meithis 6th day of June 1911.
' EDWIN O. BARSTOW.
Attested bj I G. LEE/CAMP, D. NEWLAND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63244611A US1014742A (en) | 1911-06-10 | 1911-06-10 | Method of manufacturing arsenate of lead. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63244611A US1014742A (en) | 1911-06-10 | 1911-06-10 | Method of manufacturing arsenate of lead. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1014742A true US1014742A (en) | 1912-01-16 |
Family
ID=3083048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US63244611A Expired - Lifetime US1014742A (en) | 1911-06-10 | 1911-06-10 | Method of manufacturing arsenate of lead. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1014742A (en) |
-
1911
- 1911-06-10 US US63244611A patent/US1014742A/en not_active Expired - Lifetime
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