GB312664A - A process for preparing anhydrous perborates - Google Patents

A process for preparing anhydrous perborates

Info

Publication number
GB312664A
GB312664A GB15529/29A GB1552929A GB312664A GB 312664 A GB312664 A GB 312664A GB 15529/29 A GB15529/29 A GB 15529/29A GB 1552929 A GB1552929 A GB 1552929A GB 312664 A GB312664 A GB 312664A
Authority
GB
United Kingdom
Prior art keywords
mms
dehydration
agitation
vacuo
water
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
Application number
GB15529/29A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB312664A publication Critical patent/GB312664A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron
    • C01B15/126—Dehydration of solid hydrated peroxyborates to less hydrated or anhydrous products
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron

Abstract

312,664. Schoenberg, G. May 30, 1928, [Convention date]. Anhydrous sodium perborate is prepared by first heating the crystalline salt at 40-100‹ C. with agitation. and if desired in vacuo until say three molecules of water of crystallization have been driven off, and then completing the dehydration in vacuo at say 100-120‹ C., if desired with agitation and in a current of dry inert gas such as air. In the second step the vapour tension must not substantially exceed 40 mms. of mercury, and is preferably maintained below 30 mms., and the temperature where the greatest concentration of water vapour occurs. especially where it leaves the apparatus, should be lower than elsewhere. The process may be effected in a rotatable aluminium drum. The product from the first step of the process may be shaped into tablets &c. and dehydration be then completed in the containers such as glass vessels employed for storage or transport of the anhydrous salt.
GB15529/29A 1928-05-30 1929-05-17 A process for preparing anhydrous perborates Expired GB312664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS312664X 1928-05-30

Publications (1)

Publication Number Publication Date
GB312664A true GB312664A (en) 1930-04-10

Family

ID=5452165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15529/29A Expired GB312664A (en) 1928-05-30 1929-05-17 A process for preparing anhydrous perborates

Country Status (2)

Country Link
FR (1) FR675020A (en)
GB (1) GB312664A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2373783A (en) * 2001-03-26 2002-10-02 Capital Controls Ltd Method of stabilising an oxidant including the step of vacuum drying

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417470A1 (en) * 1978-02-16 1979-09-14 Air Liquide Anhydrous sodium perborate prepn. - by dehydration of hydrated sodium perborate in presence of hot, decarbonated, dry air

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2373783A (en) * 2001-03-26 2002-10-02 Capital Controls Ltd Method of stabilising an oxidant including the step of vacuum drying

Also Published As

Publication number Publication date
FR675020A (en) 1930-02-05

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