BR8902097A - Processo para a preparacao de dicromato de sodio - Google Patents

Processo para a preparacao de dicromato de sodio

Info

Publication number
BR8902097A
BR8902097A BR898902097A BR8902097A BR8902097A BR 8902097 A BR8902097 A BR 8902097A BR 898902097 A BR898902097 A BR 898902097A BR 8902097 A BR8902097 A BR 8902097A BR 8902097 A BR8902097 A BR 8902097A
Authority
BR
Brazil
Prior art keywords
preparation
sodium dichromate
dichromate
sodium
Prior art date
Application number
BR898902097A
Other languages
English (en)
Inventor
Albert E B Glissmann
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of BR8902097A publication Critical patent/BR8902097A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/14—Chromates; Bichromates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/16—Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/027—Chromium dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/01—Waste acid containing iron
    • Y10S423/02—Sulfuric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Removal Of Specific Substances (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
BR898902097A 1988-05-05 1989-05-04 Processo para a preparacao de dicromato de sodio BR8902097A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3815240A DE3815240A1 (de) 1988-05-05 1988-05-05 Verfahren zur herstellung von na-dichromat

Publications (1)

Publication Number Publication Date
BR8902097A true BR8902097A (pt) 1989-12-05

Family

ID=6353652

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898902097A BR8902097A (pt) 1988-05-05 1989-05-04 Processo para a preparacao de dicromato de sodio

Country Status (11)

Country Link
US (1) US4968503A (pt)
EP (1) EP0340585B1 (pt)
JP (1) JP2648363B2 (pt)
KR (1) KR890017175A (pt)
CN (1) CN1037495A (pt)
AR (1) AR241893A1 (pt)
BR (1) BR8902097A (pt)
DE (2) DE3815240A1 (pt)
ES (1) ES2032071T3 (pt)
RO (1) RO102743B1 (pt)
ZA (1) ZA893270B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5250274A (en) * 1990-04-26 1993-10-05 Bayer Aktiengesellschaft Process for the production of sodium dichromate
US6814867B2 (en) * 2002-09-12 2004-11-09 Inuista North America S.à.r.l. Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane
GB2501994B (en) * 2010-11-02 2018-09-12 Tianjin Passion Science And Tech Co Ltd A hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome
CN102408131B (zh) * 2011-09-09 2013-09-04 甘肃锦世化工有限责任公司 提高工业重铬酸钠成品含量的方法
CN112158885A (zh) * 2020-10-12 2021-01-01 甘肃锦世化工有限责任公司 一种降低重铬酸钠酸化液中三价铬的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932598A (en) * 1970-04-24 1976-01-13 Cooper Hugh S Process for producing alkali metal chromates and dichromates
US3715425A (en) * 1970-10-19 1973-02-06 Allied Chem Process for the manufacture of chrome chemicals
SU394316A1 (ru) * 1971-07-30 1973-08-22 Способ получения бихромата натрия
US3784672A (en) * 1972-10-19 1974-01-08 Allied Chem Process for reducing the trivalent chromium content of alkali metal bisulfate solutions
SU497241A1 (ru) * 1973-03-06 1975-12-30 Предприятие П/Я А-7125 Способ получени бихромата натри
IT1042133B (it) * 1975-08-28 1980-01-30 Stoppani P & Co Procedimento per il recupero e la valorizzazione degli scarti della fabbricazione dell anidri de cromica
JPS581046B2 (ja) * 1976-09-27 1983-01-10 日本化学工業株式会社 クロムメツキ老化液の処理方法

Also Published As

Publication number Publication date
EP0340585B1 (de) 1992-04-08
US4968503A (en) 1990-11-06
JP2648363B2 (ja) 1997-08-27
RO102743B1 (en) 1992-03-30
EP0340585A2 (de) 1989-11-08
CN1037495A (zh) 1989-11-29
ES2032071T3 (es) 1993-01-01
KR890017175A (ko) 1989-12-15
DE3815240A1 (de) 1989-11-16
DE58901110D1 (de) 1992-05-14
AR241893A1 (es) 1993-01-29
JPH01313334A (ja) 1989-12-18
ZA893270B (en) 1990-01-31
EP0340585A3 (en) 1990-03-14

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Legal Events

Date Code Title Description
FF Decision: intention to grant
KD Notifcation of receipt (letter patent)
FG Letter patent granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 04/05/2004