US3123440A - Ammonium bromide composition - Google Patents
Ammonium bromide composition Download PDFInfo
- Publication number
- US3123440A US3123440A US3123440DA US3123440A US 3123440 A US3123440 A US 3123440A US 3123440D A US3123440D A US 3123440DA US 3123440 A US3123440 A US 3123440A
- Authority
- US
- United States
- Prior art keywords
- ammonium bromide
- salts
- weight percent
- product
- phosphoric acid
- 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
- SWLVFNYSXGMGBS-UHFFFAOYSA-N Ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 title claims description 106
- 229940077484 ammonium bromide Drugs 0.000 title claims description 106
- 239000000203 mixture Substances 0.000 title claims description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 40
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 10
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N Dipropylamine Chemical class CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 150000005332 diethylamines Chemical class 0.000 claims 2
- 150000004656 dimethylamines Chemical class 0.000 claims 2
- 239000000243 solution Substances 0.000 description 22
- -1 octyl phenyl esters Chemical class 0.000 description 20
- 239000002245 particle Substances 0.000 description 20
- 238000001694 spray drying Methods 0.000 description 20
- 125000001664 diethylamino group Chemical class [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 18
- 239000000839 emulsion Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 18
- 239000004033 plastic Substances 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 14
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 10
- 125000004432 carbon atoms Chemical group C* 0.000 description 10
- 235000012970 cakes Nutrition 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000004698 Polyethylene (PE) Substances 0.000 description 6
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2R)-2-[(2R,3R,4S)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000002401 inhibitory effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 229940035044 sorbitan monolaurate Drugs 0.000 description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 231100000078 corrosive Toxicity 0.000 description 4
- 231100001010 corrosive Toxicity 0.000 description 4
- 239000003995 emulsifying agent Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229920001214 Polysorbate 60 Polymers 0.000 description 2
- JNYAEWCLZODPBN-CTQIIAAMSA-N Sorbitan Chemical class OCC(O)C1OCC(O)[C@@H]1O JNYAEWCLZODPBN-CTQIIAAMSA-N 0.000 description 2
- IJCWFDPJFXGQBN-BIFNRIDTSA-N Sorbitan tristearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)[C@H]1OC[C@@H](O)[C@@H]1OC(=O)CCCCCCCCCCCCCCCCC IJCWFDPJFXGQBN-BIFNRIDTSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000005265 dialkylamine group Chemical group 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- 125000002147 dimethylamino group Chemical class [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000004079 fireproofing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001281 polyalkylene Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000001589 sorbitan tristearate Substances 0.000 description 2
- 229960004129 sorbitan tristearate Drugs 0.000 description 2
- 235000011078 sorbitan tristearate Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/167—Phosphorus-containing compounds
- C23F11/1673—Esters of phosphoric or thiophosphoric acids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/16—Halides of ammonium
- C01C1/166—Ammonium bromide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S71/00—Chemistry: fertilizers
- Y10S71/04—Anti-corrosion
Definitions
- Ammonium bromide is corrosive to metals. This corrosiveness greatly limits the utility of the material. The material is hydroscopic and also sublimes at room temperature so that a metal in contact with the solid ammonium bromide or an atmosphere exposed to ammonium bromide will corrode extensively. Ammonium bromide has desirable properties in that when it is dispersed in plastic material it imparts fire resistant properties to the plastic. However, due to the corrosiveness of the material it is finding limited use for this purpose. It is difficult to store and also corrodes the equipment used in molding or extruding the plastic material containing the ammonium bromide.
- ammonium bromide In addition to its corrosiveness ammonium bromide has another undesirable property which further limits its use as a fireproofing agent in plastics. Due to the hydroscopic properties of the ammonium bromide and its sublimation, ammonium bromide upon storage tends to cake or agglomerate and is difficult to disperse. To disperse the ammonium bromide evenly in a plastic material, it is essential that the particles of the ammonium bromide be of a small size, preferably less than 40 microns. When larger particles are used or when the ammonium bromide is not adequately dispersed, formation of specks or rough spots on the surface of the fabricated plastic article is obtained. This adversely affects the appearance and saleability of the items. Thus, it is desirable to have an ammonium bromide product which is inhibited to decrease its corrosiveness and also a method for the preparation of this product in a fine particle size.
- a further object is to provide a free-flowing ammonium bromide product in small particle size which will not cake or stick together upon storage.
- a still further object is to provide a method for the preparation of the inhibited ammonium product which is free-flowing and of small particle size.
- T he various known methods for intimately intermixing two materials may be used in the formation of the in hibited ammonium bromide product.
- the most convenient methods of intermixing the additament with the solid ammonium bromide is to add the additament to the ammonium bromide and then grind the mixture to obtain uniform distribution of the additament throughout the ammonium bromide.
- Spray drying of ammonium bromide solutions or emulsions containing the additament may be also used as a method to obtain the inhibited product.
- Spray drying of ammonium bromide solutions or emulsions to which the additaments have been added has a further advantage in that a fine, free-flowing product of ammonium bromide is obtained.
- the particles obtained are in the range of a micron size and do not cake or adhere together.
- spray drying provides a convenient method of not only dispersing the inhibitor into the ammonium bromide, but the inhibitor serves an additional function of producing a fine free-flowing product.
- Spray drying of ammonium bromide solutions to obtain fine particles of the ammonium bromide without the addition of the additaments is not satisfactory.
- an aqueous ammonium bromide solution to which the additament has been added is used. Since the diethylamine salts of the octyl phenyl esters of phosphoric acid are insoluble in water, an emulsion with the ammonium bromide solution is prepared and then spray dried. In the preparation of these emulsions, it
- Example I An emulsion was made by intermixing 2 grams of a diethylamine salt of a mixture of the monoand di-octylphenyl esters of phosphoric acid to 90 grams of a Weight percent ammonium bromide solution. A small amount of a polyethylene sorbitan monolaurate as a dispersant was also added. A mild steel coupon of /2" x 1" x A was inserted in the emulsion. A After 7 days the emulsion remained white and no discoloration of the solution was obtained. The steel coupon was slightly dulled. A loss weight of about only 0.001 gram was obtained in the 7 days.
- a free-flowing composition of matter which comprises ammonium bromide intimately intermixed with from 0.5 to 15 Weight percent, based on said ammonium bromide, of a compound selected from the group consisting of the dimethylamine salts, the diethylamine salts and the dipropylamine salts of monoand di-alkylphenyl esters of phosphoric acid, said alkyl groups having from 6 to 12 carbon atoms.
- the step to produce a freefiowing product of the ammonium bromide which comprises intermixing with the ammonium bromide aqueous solution from 0.5 to 15 weight percent, based upon the ammonium bromide, of a compound selected from the group consisting of dirnethylamine salts, diethylamine salts and dipropylamine salts of monoand di-alkylphenyl esters of phosphoric acid, said alkyl groups having from 6 to 12 carbon atoms.
- diethylamine salt of monooctylphenyl ester of phosphoric acid is intermixed with the ammonium bromide aqueous solution prior to spray drying in amount of from 1 to 3 weight percent, based upon the ammonium bromide.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
United States Patent 3,123,449 AMMONIUM BRGMEDE COMPGSKTKON Elmer L. McMaster and Floyd B. Nagle, both of Midland, Mich, assignors to The Dow Chemical Company, Midland, Mich, a corporation of Delaware No Drawing. Filed Nov. 17, 1961, Ser. No. 153,189 6 (Ilaims. (Cl. 23100) This invention relates to ammonium bromide, and more particularly,'to a corrosion inhibiting ammonium bromide product and its method of preparation.
Ammonium bromide is corrosive to metals. This corrosiveness greatly limits the utility of the material. The material is hydroscopic and also sublimes at room temperature so that a metal in contact with the solid ammonium bromide or an atmosphere exposed to ammonium bromide will corrode extensively. Ammonium bromide has desirable properties in that when it is dispersed in plastic material it imparts fire resistant properties to the plastic. However, due to the corrosiveness of the material it is finding limited use for this purpose. It is difficult to store and also corrodes the equipment used in molding or extruding the plastic material containing the ammonium bromide.
In addition to its corrosiveness ammonium bromide has another undesirable property which further limits its use as a fireproofing agent in plastics. Due to the hydroscopic properties of the ammonium bromide and its sublimation, ammonium bromide upon storage tends to cake or agglomerate and is difficult to disperse. To disperse the ammonium bromide evenly in a plastic material, it is essential that the particles of the ammonium bromide be of a small size, preferably less than 40 microns. When larger particles are used or when the ammonium bromide is not adequately dispersed, formation of specks or rough spots on the surface of the fabricated plastic article is obtained. This adversely affects the appearance and saleability of the items. Thus, it is desirable to have an ammonium bromide product which is inhibited to decrease its corrosiveness and also a method for the preparation of this product in a fine particle size.
It is the principal object of this invention to provide an inhibited composition of ammonium bromide to inhibit its corrosion of metals. A further object is to provide a free-flowing ammonium bromide product in small particle size which will not cake or stick together upon storage. A still further object is to provide a method for the preparation of the inhibited ammonium product which is free-flowing and of small particle size.
The above and other objects are attained according to the invention by intimately intermixing from 0.5 to
weight percent, based upon ammonium bromide, of a dialkylamine salt of monoor di-alkylphenyl ester of phosphoric acid. When the above compounds are intermixed with ammonium bromide, the corrosiveness of the ammonium bromide is inhibited. The solid particles of ammonium bromide in contact with the metal will not corcode the metal nor will an aqueous solution of the product be corrosive to the metal.
3,123,440 Patented Mar. 3, 1964 The compounds which are effective may be represented by the following general formulae:
Where, in each of the above formulae, R R R and R represent an alkyl radical having from 1 to 3 carbon atoms and R and R" are alkyl radicals having from 6 to 12 carbon atoms. The diethylamine salts of the octylphenyl esters are preferred.
T he various known methods for intimately intermixing two materials may be used in the formation of the in hibited ammonium bromide product. Generally, the most convenient methods of intermixing the additament with the solid ammonium bromide is to add the additament to the ammonium bromide and then grind the mixture to obtain uniform distribution of the additament throughout the ammonium bromide. Spray drying of ammonium bromide solutions or emulsions containing the additament may be also used as a method to obtain the inhibited product.
Spray drying of ammonium bromide solutions or emulsions to which the additaments have been added has a further advantage in that a fine, free-flowing product of ammonium bromide is obtained. The particles obtained are in the range of a micron size and do not cake or adhere together. Thus, spray drying provides a convenient method of not only dispersing the inhibitor into the ammonium bromide, but the inhibitor serves an additional function of producing a fine free-flowing product. Spray drying of ammonium bromide solutions to obtain fine particles of the ammonium bromide without the addition of the additaments is not satisfactory. The particles obtained by spray drying cake or adhere together as soon as they are formed. Thus, large particles are obtained or the particles adhere together making it diflicult to disperse them in plastic materials without the formation of specks or rough spots on the surface of the material.
In preparing the stabilized ammonium bromide product by spray drying, an aqueous ammonium bromide solution to which the additament has been added is used. Since the diethylamine salts of the octyl phenyl esters of phosphoric acid are insoluble in water, an emulsion with the ammonium bromide solution is prepared and then spray dried. In the preparation of these emulsions, it
may be desirable to use a surfactant or emulsifier, such as the polyalkylene sorbitan esters of long chained acids as polyethylene sorbitan monolaurate, polyoxypropyleneethylene sorbitan monolaurate, polyethylene sorbitan tristearate, polyoxyethylene sorbitan pentaoleate or other well known emulsifiers. With the addition of an emulsisue-asap same amount is also sufiicient to impart the free-flowing non-caking characteristics to the particles when the ammonium bromide product is obtained by spray drying. It is preferred to use from 1 to 3 weight percent of the additament.
The following example further illustrates the invention.
Example I An emulsion was made by intermixing 2 grams of a diethylamine salt of a mixture of the monoand di-octylphenyl esters of phosphoric acid to 90 grams of a Weight percent ammonium bromide solution. A small amount of a polyethylene sorbitan monolaurate as a dispersant was also added. A mild steel coupon of /2" x 1" x A was inserted in the emulsion. A After 7 days the emulsion remained white and no discoloration of the solution was obtained. The steel coupon was slightly dulled. A loss weight of about only 0.001 gram was obtained in the 7 days.
A second. run similar to the above was repeated except that only 0.37 gram of the additament was added to the 90 grams of 20 weight percent ammonium bromide solution. After 3 days the coupon was lustrous and the solution or emulsion remained white and uncolored. A loss of 0.005 gram was obtained.
A blank run was made where a similar mild steel coupon was placed in the 20 weight percent solution. A loss of 0.04 gram was obtained and the solution turned from white to an orange color in the three day test.
When an emulsion similar to that above is spray dried, the product obtained is white in color and free-flowing.
Similar results are obtained with dimethylarnine and dipropylamine salts of the alkylphenyl esters having alkyl radicals of from 6 to 12 carbon atoms.
The application is a continuation-in-part of application Serial No. 9,181, filed February 17, 1960, now Patent No. 3,037,842.
What is claimed is:
1. A free-flowing composition of matter which comprises ammonium bromide intimately intermixed with from 0.5 to 15 Weight percent, based on said ammonium bromide, of a compound selected from the group consisting of the dimethylamine salts, the diethylamine salts and the dipropylamine salts of monoand di-alkylphenyl esters of phosphoric acid, said alkyl groups having from 6 to 12 carbon atoms.
2. A free-flowing composition of matter according to laim 1 wherein the diethylamine salt of dioctylphenyl ester of phosphoric acid is intermixed with the ammonium bromide in an amount of from 1 to 3 weight percent, based on said ammonium bromide.
3. A free-flowing composition of matter according to claim 1 wherein the diethylamine salt of monooctylphenyl ester of phosphoric acid is intermixed with the ammonium bromide in an amount of from 1 to 3 weight percent, based on said ammonium bromide.
4. In a process for the spray drying of ammonium bromide aqueous solutions, the step to produce a freefiowing product of the ammonium bromide, which comprises intermixing with the ammonium bromide aqueous solution from 0.5 to 15 weight percent, based upon the ammonium bromide, of a compound selected from the group consisting of dirnethylamine salts, diethylamine salts and dipropylamine salts of monoand di-alkylphenyl esters of phosphoric acid, said alkyl groups having from 6 to 12 carbon atoms.
5. A process according to claim 4 wherein diethylamine salt of monooctylphenyl ester of phosphoric acid is intermixed with the ammonium bromide aqueous solution prior to spray drying in amount of from 1 to 3 weight percent, based upon the ammonium bromide.
6. A process according to claim 4 wherein diethylamine salt of dioctylphenyl ester of phosphoric acid is intermixed with the ammonium bromide aqueous solution prior to spray drying in amount of from 1 to 3 weight percent, based upon the ammonium bromide.
Referencestlited in the file of this patent UNITED STATES PATENTS 2,403,762 Smith et al July 9, 1946 2,616,786 Whetstone Nov. 4, 1952 2,903,393 Allen et al Sept. 8, 1959
Claims (1)
1. A FREE-FLOWING COMPOSITION OF MATTER WHICH COMPRISES AMMONIUM BROMIDE INTIMATELY INTERMIXED WITH FROM 0.5 TO 15 WEIGHT PERCENT, BASED ON SAID AMMONIUM BROMIDE, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE DIMETHYLAMINE SALTS, THE DIETHYLAMINE SALTS AND THE DIPROPYLAMINE SALTS OF MONO- AND DI-ALKYLPHENYL ESTERS OF PHOSPHORIC ACID, SAID ALKYL GROUPS HAVING FROM 6 TO 12 CARBON ATOMS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3123440A true US3123440A (en) | 1964-03-03 |
Family
ID=3453013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US3123440D Expired - Lifetime US3123440A (en) | Ammonium bromide composition |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3123440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567157A1 (en) * | 1984-07-05 | 1986-01-10 | Monsanto Co | Diammonium sulphate solutions with inhibited corrosive action |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2403762A (en) * | 1945-03-19 | 1946-07-09 | Gulf Oil Corp | Fatty amine salts of acid phosphate di-esters |
| US2616786A (en) * | 1947-01-06 | 1952-11-04 | Ici Ltd | Ammonium nitrate in free-flowing form and method of preparing same |
| US2903393A (en) * | 1958-01-17 | 1959-09-08 | Virginia Carolina Chem Corp | Diethylamine addition products of acid phosphates |
-
0
- US US3123440D patent/US3123440A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2403762A (en) * | 1945-03-19 | 1946-07-09 | Gulf Oil Corp | Fatty amine salts of acid phosphate di-esters |
| US2616786A (en) * | 1947-01-06 | 1952-11-04 | Ici Ltd | Ammonium nitrate in free-flowing form and method of preparing same |
| US2903393A (en) * | 1958-01-17 | 1959-09-08 | Virginia Carolina Chem Corp | Diethylamine addition products of acid phosphates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567157A1 (en) * | 1984-07-05 | 1986-01-10 | Monsanto Co | Diammonium sulphate solutions with inhibited corrosive action |
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