GB737304A - Improvements in or relating to sodium perborate - Google Patents

Improvements in or relating to sodium perborate

Info

Publication number
GB737304A
GB737304A GB27440/53A GB2744053A GB737304A GB 737304 A GB737304 A GB 737304A GB 27440/53 A GB27440/53 A GB 27440/53A GB 2744053 A GB2744053 A GB 2744053A GB 737304 A GB737304 A GB 737304A
Authority
GB
United Kingdom
Prior art keywords
sodium perborate
grams
trihydrate
suspension
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
GB27440/53A
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.)
Konink Ind Mij Voorhen Noury &
Original Assignee
Konink Ind Mij Voorhen Noury &
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 Konink Ind Mij Voorhen Noury & filed Critical Konink Ind Mij Voorhen Noury &
Publication of GB737304A publication Critical patent/GB737304A/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

Abstract

Sodium perborate trihydrate of the formula NaBO3.3H2O or NaBO2.H2O2.2H2O is said to be formed by stirring or otherwise agitating a suspension of sodium perborate tetrahydrate in water between normal temperature and 60 DEG C., and recovering sodium perborate trihydrate crystals. The suspension is preferably inoculated with sodium perborate trihydrate crystals obtained from a previous operation. Stabilizing agents such as magnesium silicate or stannic oxide may be added. According to an example equal parts by weight of sodium perborate tetrahydrate and water were stirred for 4 hours at 50 DEG C. and the resulting mass filtered and vacuum dried at 40 DEG C. That part of the perborate in the mother liquor was reused. The product, sodium perborate trihydate, had a melting-point of 85 DEG C., an active oxygen content of 11.7 per cent and a solubility per 100 grams of solution of 2.3 grams at 25 DEG C. and 5.7 grams at 50 DEG C. The lattice constants of the trihydrate are stated.
GB27440/53A 1952-10-17 1953-10-06 Improvements in or relating to sodium perborate Expired GB737304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL737304X 1952-10-17

Publications (1)

Publication Number Publication Date
GB737304A true GB737304A (en) 1955-09-21

Family

ID=19820426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27440/53A Expired GB737304A (en) 1952-10-17 1953-10-06 Improvements in or relating to sodium perborate

Country Status (1)

Country Link
GB (1) GB737304A (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

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

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