Stabilization of an aqueous solution of an organic iron salt
US-9988574-B2 · Jun 5, 2018 · US
Non-caking salt composition, preparation process and use thereof
US9745203B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9745203-B2 |
| Application number | US-201414524580-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2014 |
| Priority date | Jun 2, 2009 |
| Publication date | Aug 29, 2017 |
| Grant date | Aug 29, 2017 |
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- Title
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Abstract
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The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sodium chloride composition comprising an iron complex of tartaric acid wherein between 60 and 80% by weight of the tartaric acid is meso-tartaric acid, wherein the iron complex of tartaric acid reduces caking of the sodium chloride composition. 2. The sodium chloride composition according to claim 1 , wherein a 10% by weight aqueous solution thereof has a pH value of between 3 and 12. 3. The sodium chloride composition according to claim 1 , wherein the iron is iron(III). 4. The sodium chloride composition according to claim 1 , wherein the molar ratio between iron and tartaric acid is between 0.1 and 2. 5. The sodium chloride composition according to claim 4 , wherein the iron complex of tartaric acid is present in the non-caking sodium chloride composition in a concentration of between 1 ppm and 200 ppm, based on iron. 6. The sodium chloride composition according to claim 1 , wherein the sodium chloride composition is a non-caking sodium chloride composition selected from feed salt, food salt, pharma salt, retail salt, industrial salt, a road salt, and a salt for use in electrolysis operations. 7. The sodium chloride composition according to claim 6 , wherein the iron complex of tartaric acid, with between 60 and 80% by weight of the tartaric acid being meso-tartaric acid, is present in said sodium chloride composition in a concentration of between 1 ppm and 200 ppm, based on iron, and wherein said sodium chloride composition is used in a membrane electrolysis operation. 8. The sodium chloride composition according to claim 2 , wherein a 10% by weight aqueous solution thereof has a pH value of between 6 and 11.
Assignees
Inventors
Classifications
- C01D3/26Primary
Preventing the absorption of moisture or caking of the crystals · CPC title
by electrolysis · CPC title
- C01D3/04Primary
Chlorides · CPC title
Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C5/00 takes precedence) · CPC title
Electrolytic production of inorganic compounds or non-metals · CPC title
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- What does patent US9745203B2 cover?
- The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
- Who is the assignee on this patent?
- Akzo Nobel Chemicals Int Bv
- What technology area does this patent fall under?
- Primary CPC classification C01D3/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 29 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).