GB656048A - Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting - Google Patents

Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting

Info

Publication number
GB656048A
GB656048A GB3338048A GB3338048A GB656048A GB 656048 A GB656048 A GB 656048A GB 3338048 A GB3338048 A GB 3338048A GB 3338048 A GB3338048 A GB 3338048A GB 656048 A GB656048 A GB 656048A
Authority
GB
United Kingdom
Prior art keywords
nitrate
crystals
potassium nitrate
dyestuff
setting
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
GB3338048A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3338048A priority Critical patent/GB656048A/en
Publication of GB656048A publication Critical patent/GB656048A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D9/00—Nitrates of sodium, potassium or alkali metals in general
    • C01D9/20—Preventing the absorption of moisture or caking

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Non-cohering free-flowing potassium nitrate crystals are produced by depositing on the surfaces of the crystals, by evaporation from aqueous solution, a dyestuff of sulphonated aromatic character such that when dissolved in a hot saturated aqueous solution of the nitrate, the crystals which begin to appear on cooling are in thin fragile plate-like form. 0.01-0.10 parts dyestuff per 100 parts nitrate may be used. In examples: (1) the nitrate is crystallized by cooling a saturated solution at 40 DEG C. containing a dyestuff, and the crystals with adhering mother liquor are dried; (2) ground nitrate is mixed with an aqueous solution of a dyestuff and dried; (3) a solution of a dye is sprayed over wet small crystals, and the mixture dried. Particularly suitable dyestuffs are 1 : 4-diaminoanthraquinone - 2 - sodium - sulphonate and 1 : 4 : 5 : 8-tetramino-anthraquinone disulphonic acid (sodium salt); other examples are listed.
GB3338048A 1948-12-29 1948-12-29 Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting Expired GB656048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3338048A GB656048A (en) 1948-12-29 1948-12-29 Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3338048A GB656048A (en) 1948-12-29 1948-12-29 Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting

Publications (1)

Publication Number Publication Date
GB656048A true GB656048A (en) 1951-08-08

Family

ID=10352186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3338048A Expired GB656048A (en) 1948-12-29 1948-12-29 Improvements in or relating to a method of lowering the tendency towards setting of potassium nitrate and potassium nitrate of free-flowing form with a reduced tendency to setting

Country Status (1)

Country Link
GB (1) GB656048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782094A (en) * 1953-06-12 1957-02-19 Ici Ltd Potassium nitrate of reduced tendency to caking and setting
US2782095A (en) * 1953-08-19 1957-02-19 Ici Ltd Sodium nitrate of reduced tendency to caking and setting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782094A (en) * 1953-06-12 1957-02-19 Ici Ltd Potassium nitrate of reduced tendency to caking and setting
US2782095A (en) * 1953-08-19 1957-02-19 Ici Ltd Sodium nitrate of reduced tendency to caking and setting

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