GB1191571A - Process for Preparing Sodium Percarbonate - Google Patents

Process for Preparing Sodium Percarbonate

Info

Publication number
GB1191571A
GB1191571A GB310768A GB310768A GB1191571A GB 1191571 A GB1191571 A GB 1191571A GB 310768 A GB310768 A GB 310768A GB 310768 A GB310768 A GB 310768A GB 1191571 A GB1191571 A GB 1191571A
Authority
GB
United Kingdom
Prior art keywords
sodium
solution
per cent
mole per
percarbonate
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
GB310768A
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of GB1191571A publication Critical patent/GB1191571A/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
    • C01B15/10—Peroxyhydrates; Peroxyacids or salts thereof containing carbon
    • C01B15/103—Peroxyhydrates; Peroxyacids or salts thereof containing carbon containing only alkali metals as metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/22—Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/22—Purification
    • C01D7/26—Purification by precipitation or adsorption

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,191,571. Sodium percarbonate. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 19 Jan., 1968 [19 Jan., 1967], No. 3107/68. Heading C1A. Sodium percarbonate (2Na 2 CO 3 3H 2 O 2 ) is prepared by continuously adding a soluble salt of magnesium, calcium or zinc, to a concentrated solution of sodium carbonate which has been treated with sodium hydroxide solution to neutralize any sodium bicarbonate present, the quantity of magnesium, calcium or zinc salt added being between 0À1 and 3À0 mole per cent (preferably about 0À5 mole per cent) of the amount of sodium carbonate in the solution, separating the precipitate and contacting the purified solution of sodium carbonate at a temperature of 30-40‹ C. with an aqueous solution of hydrogen peroxide containing between 30% and 90% by weight of hydrogen peroxide. The quantities of the solutions used are such that the molar ratios of hydrogen peroxide to sodium carbonate is between 1 and 2, and preferably between 1À3 and 1À5. The mixture may be seeded with a small quantity of percarbonate crystals in order to aid precipitation of sodium percarbonate. The amount of sodium hydroxide used to neutralize the bicarbonate in the solution may be up to 50 mole per cent in excess of that required for neutralization, but the excess is preferably about 20 mole per cent. The sodium percarbonate produced is fairly stable, but conventional stabilizers may be added to improve its stability.
GB310768A 1967-01-19 1968-01-19 Process for Preparing Sodium Percarbonate Expired GB1191571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR91689A FR1516935A (en) 1967-01-19 1967-01-19 Process for preparing sodium carbonate hydroperoxidate

Publications (1)

Publication Number Publication Date
GB1191571A true GB1191571A (en) 1970-05-13

Family

ID=8624069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB310768A Expired GB1191571A (en) 1967-01-19 1968-01-19 Process for Preparing Sodium Percarbonate

Country Status (5)

Country Link
BE (1) BE709546A (en)
DE (1) DE1667801C3 (en)
FR (1) FR1516935A (en)
GB (1) GB1191571A (en)
NL (1) NL159352B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071462A (en) * 1974-08-20 1978-01-31 Kao Soap Co., Ltd. Process for preparation of sodium percarbonate or sodium perborate of high specific volume
US5244644A (en) * 1991-03-13 1993-09-14 Peroxid-Chemie Gmbh Process for improving the storage stability of percarbonate and percarbonate composition produced thereby
EP0748764A1 (en) * 1995-06-08 1996-12-18 AUSIMONT S.p.A. Process for producing sodium percarbonate in granular form

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544119A (en) *
US2541733A (en) * 1947-05-22 1951-02-13 Du Pont Production of alkali metal carbonate perhydrates
GB722351A (en) * 1952-05-19 1955-01-26 Laporte Chemical Improvements in or relating to the manufacture of percarbonates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071462A (en) * 1974-08-20 1978-01-31 Kao Soap Co., Ltd. Process for preparation of sodium percarbonate or sodium perborate of high specific volume
US5244644A (en) * 1991-03-13 1993-09-14 Peroxid-Chemie Gmbh Process for improving the storage stability of percarbonate and percarbonate composition produced thereby
EP0748764A1 (en) * 1995-06-08 1996-12-18 AUSIMONT S.p.A. Process for producing sodium percarbonate in granular form

Also Published As

Publication number Publication date
NL6800744A (en) 1968-07-22
DE1667801C3 (en) 1985-01-03
NL159352B (en) 1979-02-15
FR1516935A (en) 1968-02-05
BE709546A (en) 1968-07-18
DE1667801A1 (en) 1971-06-24
DE1667801B2 (en) 1978-10-05

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years