ES2049833T3 - Procedimiento para la preparacion de cristales de sulfuro sodico anhidro. - Google Patents

Procedimiento para la preparacion de cristales de sulfuro sodico anhidro.

Info

Publication number
ES2049833T3
ES2049833T3 ES89401456T ES89401456T ES2049833T3 ES 2049833 T3 ES2049833 T3 ES 2049833T3 ES 89401456 T ES89401456 T ES 89401456T ES 89401456 T ES89401456 T ES 89401456T ES 2049833 T3 ES2049833 T3 ES 2049833T3
Authority
ES
Spain
Prior art keywords
crystals
sodium
procedure
preparation
sodium anhydrous
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
Application number
ES89401456T
Other languages
English (en)
Inventor
Kannosuke Maeda
Yoshio Aoyama
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.)
Sankyo Kasei Co Ltd
Original Assignee
Sankyo Kasei Co Ltd
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 Sankyo Kasei Co Ltd filed Critical Sankyo Kasei Co Ltd
Application granted granted Critical
Publication of ES2049833T3 publication Critical patent/ES2049833T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C01B17/38—Dehydration
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/32—Thermal properties
    • C01P2006/33—Phase transition temperatures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

SE DESCRIBE UN PROCESO PARA PREPARAR CRISTALES DE SULFURO SODICO ANHIDRO, QUE SE CARACTERIZA POR COMPRENDER LAS ETAPAS DE CALENTAR CRISTALES DE POLIHIDRATO DE SULFURO SODICO BAJO UNA PRESION DE UNOS 500 TORR O MENOS, A UNA TEMPERATURA QUE VARIA EN MENOS DE +-10 (GRADOS) C DE LA TEMPERATURA DE TRANSICION DE FASES ENTRE CRISTALES DE POLIHIDRATO Y CRISTALES DE MONOHIDRATO DE SULFURO SODICO, DURANTE 2 HORAS O MAS Y CALENTAR DESPUES EL MONOHIDRATO A PRESION ATMOSFERICA O REDUCIDA DE UNOS 90 A UNOS 200 (GRADOS) C DURANTE UNAS DOS HORAS O MAS TIEMPO.
ES89401456T 1988-05-31 1989-05-29 Procedimiento para la preparacion de cristales de sulfuro sodico anhidro. Expired - Lifetime ES2049833T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13485488 1988-05-31
JP63309263A JPH0251404A (ja) 1988-05-31 1988-12-06 無水硫化ナトリウム結晶の製造法

Publications (1)

Publication Number Publication Date
ES2049833T3 true ES2049833T3 (es) 1994-05-01

Family

ID=26468833

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89401456T Expired - Lifetime ES2049833T3 (es) 1988-05-31 1989-05-29 Procedimiento para la preparacion de cristales de sulfuro sodico anhidro.

Country Status (6)

Country Link
US (1) US5173088A (es)
EP (1) EP0345136B1 (es)
JP (1) JPH0251404A (es)
KR (1) KR900017901A (es)
DE (1) DE68913361T2 (es)
ES (1) ES2049833T3 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3408577B2 (ja) * 1993-04-22 2003-05-19 ナガオ株式会社 不活性ガスによる硫化ソーダ有形物の脱水方法
JP3408576B2 (ja) * 1993-04-22 2003-05-19 ナガオ株式会社 不活性ガスでの硫化ソーダ有形物の脱水方法
DE19755760A1 (de) * 1997-12-16 1999-06-24 Degussa Verfahren zur Herstellung von wasserfreiem Natriumsulfid
US6503474B1 (en) 1997-12-16 2003-01-07 Degussa Ag Process for the preparation of anhydrous sodium sulfide
US6582675B2 (en) 2000-03-28 2003-06-24 Degussa Ag Method for the preparation of anhydrous sodium sulfide
JP3828090B2 (ja) * 2003-04-15 2006-09-27 勝華科技股▲ふん▼有限公司 昇華純化方法
EP1684579A1 (en) * 2003-10-22 2006-08-02 Fred Hutchinson Cancer Research Center Methods, compositions and devices for inducing stasis in cells, tissues, organs, and organisms
US20050170019A1 (en) * 2003-10-22 2005-08-04 Fred Hutchinson Cancer Research Center Methods, compositions and devices for inducing stasis in cells
US20050136125A1 (en) * 2003-10-22 2005-06-23 Roth Mark B. Methods, compositions and devices for inducing stasis in cells, tissues, organs, and organisms
PT1879599E (pt) 2005-04-20 2014-01-23 Hutchinson Fred Cancer Res Métodos, composições e artigos de fabrico para aumentar a capacidade de sobrevivência de células, tecidos, órgãos, e organismos
CN103241716A (zh) * 2013-04-22 2013-08-14 中国石油化工股份有限公司 一种合成聚苯硫醚用结晶硫化钠脱水的加热控制方法
CN108147372B (zh) * 2017-12-05 2020-01-17 宜宾天原集团股份有限公司 聚苯硫醚生产中硫化钠反应前体的制备方法
CN116281875A (zh) * 2021-12-14 2023-06-23 南风化工(运城)集团有限公司 一种无水硫化钠的生产方法
CN115947314A (zh) * 2022-12-26 2023-04-11 南风化工(运城)集团有限公司 一种无水硫化钠的生产方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477959A (en) * 1944-10-03 1949-08-02 Worthington Pump & Mach Corp Balanced heat system for vacuum drying
US2533163A (en) * 1948-12-27 1950-12-05 Gen Aniline & Film Corp Dehydration of sodium sulfide
US3235329A (en) * 1962-10-01 1966-02-15 Fmc Corp Novel sodium carbonate-sodium bicarbonate compositions
SU363658A1 (ru) * 1970-05-19 1972-12-25 А. М. Бикинеев, Ю. И. Огородников , Е. И. Пономарева Институт металлургии , обогащени Казахской ССР Способ получения безводного сернистого натрия
US4039617A (en) * 1975-06-17 1977-08-02 Allied Chemical Corporation Recovery of soda values and heat from sodium carbonate crystallizer purge liquors
US3992159A (en) * 1975-06-23 1976-11-16 Bell Telephone Laboratories, Incorporated Process for purification by cryogenic sublimation
IL51692A (en) * 1977-03-18 1981-05-20 Sadan Abraham Process for dehydrating hydrated salts in solar ponds
JPS6428207A (en) * 1987-07-23 1989-01-30 Sankyo Kasei Kk Sodium sulfide anhydrous single crystal and production thereof

Also Published As

Publication number Publication date
EP0345136A1 (en) 1989-12-06
JPH0251404A (ja) 1990-02-21
DE68913361T2 (de) 1994-06-01
DE68913361D1 (de) 1994-04-07
US5173088A (en) 1992-12-22
JPH0512285B2 (es) 1993-02-17
EP0345136B1 (en) 1994-03-02
KR900017901A (ko) 1990-12-20

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