GB1363288A – Reduction of the trivalent chromium content of an aqueous alkali metal bisulphate solution
– Google Patents
GB1363288A – Reduction of the trivalent chromium content of an aqueous alkali metal bisulphate solution
– Google Patents
Reduction of the trivalent chromium content of an aqueous alkali metal bisulphate solution
Info
Publication number
GB1363288A
GB1363288A
GB4257172A
GB4257172A
GB1363288A
GB 1363288 A
GB1363288 A
GB 1363288A
GB 4257172 A
GB4257172 A
GB 4257172A
GB 4257172 A
GB4257172 A
GB 4257172A
GB 1363288 A
GB1363288 A
GB 1363288A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
trivalent chromium
bisulphate
aqueous alkali
solution
Prior art date
1970-10-19
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
GB4257172A
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.)
Allied Corp
Original Assignee
Allied Chemical and Dye Corp
Allied Chemical Corp
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.)
1970-10-19
Filing date
1971-10-19
Publication date
1974-08-14
1971-10-19
Application filed by Allied Chemical and Dye Corp, Allied Chemical Corp
filed
Critical
Allied Chemical and Dye Corp
1974-08-14
Publication of GB1363288A
publication
Critical
patent/GB1363288A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
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
Abstract
1363288 Alkali metal bisulphates ALLIED CHEMICAL CORP 19 Oct 1971 [19 Oct 1970] 42571/72 Divided out of 1363287 Heading C1A An aqueous alkali metal bisulphate solution containing trivalent chromium contaminant is reacted with an alkali metal persulphate at 60 C. to the boiling point of the solution, to oxidize substantially all the trivalent chromium to hexavalent chromium. The crude bisulphate is suitably that made by reacting anhydrous sodium bichromate with sulphuric acid to produce chromic anhydride and sodium bisulphate as by-product. The reacted bisulphate solution may be used to acidify alkali metal chromate yellow liquor to form the bichromate. Specification 1,363,287 is referred to.
GB4257172A
1970-10-19
1971-10-19
Reduction of the trivalent chromium content of an aqueous alkali metal bisulphate solution
Expired
GB1363288A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US8202470A
1970-10-19
1970-10-19
Publications (1)
Publication Number
Publication Date
GB1363288A
true
GB1363288A
(en)
1974-08-14
Family
ID=22168555
Family Applications (3)
Application Number
Title
Priority Date
Filing Date
GB4864771A
Expired
GB1363287A
(en)
1970-10-19
1971-10-19
Process for the manufacture of chrome chemicals
GB4257272A
Expired
GB1363289A
(en)
1970-10-19
1971-10-19
Reduction of halide content of halide-contaminated alkali metal bichromate solution
GB4257172A
Expired
GB1363288A
(en)
1970-10-19
1971-10-19
Reduction of the trivalent chromium content of an aqueous alkali metal bisulphate solution
Family Applications Before (2)
Application Number
Title
Priority Date
Filing Date
GB4864771A
Expired
GB1363287A
(en)
1970-10-19
1971-10-19
Process for the manufacture of chrome chemicals
GB4257272A
Expired
GB1363289A
(en)
1970-10-19
1971-10-19
Reduction of halide content of halide-contaminated alkali metal bichromate solution
Country Status (7)
Country
Link
US
(1)
US3715425A
(en)
JP
(1)
JPS558455B1
(en)
CA
(1)
CA956435A
(en)
DE
(1)
DE2151323A1
(en)
ES
(1)
ES396400A1
(en)
GB
(3)
GB1363287A
(en)
IT
(1)
IT943422B
(en)
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1442415A
(en)
*
1973-12-07
1976-07-14
British Chrome Chemicals Ltd
Sodium sulphate compositions and their production
DE3815240A1
(en)
*
1988-05-05
1989-11-16
Bayer Ag
METHOD FOR PRODUCING NA DICHROMATE
CN110436522A
(en)
*
2019-09-02
2019-11-12
宝武集团环境资源科技有限公司
A kind of recycling processing method of chromium-bearing sludge
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1924710A
(en)
*
1930-08-14
1933-08-29
Bozel Maletra Prod Chimiques
Process for the manufacture of dichromates
US2639216A
(en)
*
1949-02-11
1953-05-19
Diamond Alkali Co
Removal of halide ions from chromate liquors
US2839359A
(en)
*
1953-08-21
1958-06-17
Diamond Alkali Co
Process for treating chromiumbearing ores
US3137541A
(en)
*
1960-04-28
1964-06-16
Diamond Alkali Co
Process for the purification of alkali metal bichromate
DE1205508B
(en)
*
1962-05-17
1965-11-25
Bayer Ag
Process for the preparation of concentrated sodium dichromate solutions
US3406008A
(en)
*
1967-05-02
1968-10-15
Pittsburgh Plate Glass Co
Method of purifying alkali metal chromate or dichromate aqueous solutions
1970
1970-10-19
US
US00082024A
patent/US3715425A/en
not_active
Expired – Lifetime
1971
1971-10-15
DE
DE19712151323
patent/DE2151323A1/en
not_active
Ceased
1971-10-15
CA
CA125,236A
patent/CA956435A/en
not_active
Expired
1971-10-16
ES
ES396400A
patent/ES396400A1/en
not_active
Expired
1971-10-19
IT
IT70424/71A
patent/IT943422B/en
active
1971-10-19
GB
GB4864771A
patent/GB1363287A/en
not_active
Expired
1971-10-19
GB
GB4257272A
patent/GB1363289A/en
not_active
Expired
1971-10-19
GB
GB4257172A
patent/GB1363288A/en
not_active
Expired
1971-10-19
JP
JP8281271A
patent/JPS558455B1/ja
active
Pending
Also Published As
Publication number
Publication date
GB1363289A
(en)
1974-08-14
CA956435A
(en)
1974-10-22
US3715425A
(en)
1973-02-06
ES396400A1
(en)
1975-01-16
IT943422B
(en)
1973-04-02
JPS558455B1
(en)
1980-03-04
GB1363287A
(en)
1974-08-14
DE2151323A1
(en)
1972-04-20
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Legal Events
Date
Code
Title
Description
1974-12-27
PS
Patent sealed [section 19, patents act 1949]
1982-05-26
PCNP
Patent ceased through non-payment of renewal fee
