GB547859A - Improvements relating to the production of basic zinc chromate - Google Patents

Improvements relating to the production of basic zinc chromate

Info

Publication number
GB547859A
GB547859A GB5313/41A GB531341A GB547859A GB 547859 A GB547859 A GB 547859A GB 5313/41 A GB5313/41 A GB 5313/41A GB 531341 A GB531341 A GB 531341A GB 547859 A GB547859 A GB 547859A
Authority
GB
United Kingdom
Prior art keywords
water
zinc oxide
litres
slurry
chromate
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
GB5313/41A
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.)
NON FERROUS METAL PRODUCTS Ltd
Original Assignee
NON FERROUS METAL PRODUCTS 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 NON FERROUS METAL PRODUCTS Ltd filed Critical NON FERROUS METAL PRODUCTS Ltd
Publication of GB547859A publication Critical patent/GB547859A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

547,859. Basic zinc chromate. NON-FERROUS METAL PRODUCTS, Ltd. April 24, 1941, No. 5313. Convention date, April 29, 1940. [Class 1 (iii)] A basic zinc chromate which is a chemical individual and has the formula 5ZnO.CrO 3 .4H 2 O is made by stirring 500 kg. zinc oxide into 5000 litres of water and adding rapidly 125 kg. chromium trioxide, CrO 3 , dissolved in 150 litres of water. The reacting mass becomes solid in about 9 minutes and is dried to constant water content. Excess of zinc oxide produces a mixture of the basic chromate with the zinc oxide. In another example 18.6 litres of zinc sulphate solution (100 grams per litre Zn) is added to a slurry of 32 pounds zinc oxide in 50 gallons water. After agitating for 45 minutes the slurry is heated to 50‹C. and 22.5 lbs. sodium dichromate (Na 2 Cr 2 O 7 , 2H 2 O) dissolved in 10 gallons of water added at 1 gallon per minute. After standing the slurry is put through a filter press and the resulting cake dried and disintegrated. The substance is used as a pigment.
GB5313/41A 1940-04-29 1941-04-24 Improvements relating to the production of basic zinc chromate Expired GB547859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US547859XA 1940-04-29 1940-04-29

Publications (1)

Publication Number Publication Date
GB547859A true GB547859A (en) 1942-09-15

Family

ID=21993533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5313/41A Expired GB547859A (en) 1940-04-29 1941-04-24 Improvements relating to the production of basic zinc chromate

Country Status (1)

Country Link
GB (1) GB547859A (en)

Similar Documents

Publication Publication Date Title
GB1522051A (en) Chromium oxide pigment from sodium chromate dihydrate plus ammonium salt
GB547859A (en) Improvements relating to the production of basic zinc chromate
GB519749A (en) Improvements in or relating to ignition compositions in electric blasting detonators
GB561205A (en) Improvements in or relating to the production of gypsum from anhydrite
GB453634A (en) Improvements in or relating to the manufacture of cigarette papers
GB507316A (en) Process for the manufacture of iron oxide
GB803670A (en) Surface finishing agent for paper and cardboard
GB711908A (en) Improvements in or relating to a process of preparing a well-crystallized periclase material and product resulting therefrom
GB929230A (en) Process for the preparation of zinc oxide pigments
GB526674A (en) Process for producing coloured unsized paper
GB290684A (en) Improvements in the production of titanium compounds and pigments
GB561212A (en) Improvements in the production of chromium compounds
GB261051A (en) Improvements in the preparation and use of titanium compounds
GB521509A (en) Improvements in or relating to the manufacture of lake pigments
CH258765A (en) Process for the preparation of a new monoazo dye.
GB750966A (en) Improvements in or relating to the preparation of chromic compounds
CH279521A (en) Process for the preparation of an azo dye.
CH180407A (en) Process for the preparation of a chromium-containing azo dye.
GB482834A (en) Improvements in and relating to the production of chemically resistant oil colour paints
CH183590A (en) Process for the preparation of a chromium-containing azo dye.
CH172607A (en) Process for the preparation of a chromium-containing azo dye.
GB277769A (en) Improvements connected with the utilisation of waste acid liquors in chemical processes
GB769037A (en) Improvements in or relating to the preparation of pigments
CH183202A (en) Process for the preparation of 2-aminodiphenyl sulfone.
CH287097A (en) Process for the preparation of a chromium-containing azo dye.