GB673601A - Process for the recovery of vitamin b - Google Patents

Process for the recovery of vitamin b

Info

Publication number
GB673601A
GB673601A GB20481/50A GB2048150A GB673601A GB 673601 A GB673601 A GB 673601A GB 20481/50 A GB20481/50 A GB 20481/50A GB 2048150 A GB2048150 A GB 2048150A GB 673601 A GB673601 A GB 673601A
Authority
GB
United Kingdom
Prior art keywords
vitamin
mixture
cresol
content
recovery
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
GB20481/50A
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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co Inc filed Critical Merck and Co Inc
Publication of GB673601A publication Critical patent/GB673601A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Vitamin B12 is purified by subjecting a mixture containing vitamin B12 and other contaminating materials to countercurrent distribution utilizing a two-phase partition solvent, and removing the fraction thereof having a vitamin B12 content enriched as compared with the vitamin B12 content of the material treated. As solvent mixture there may be used a mixture of benzyl alcohol or cresol-toluene or cresol-carbon tetrachloride and water.
GB20481/50A 1949-10-08 1950-08-18 Process for the recovery of vitamin b Expired GB673601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US673601XA 1949-10-08 1949-10-08

Publications (1)

Publication Number Publication Date
GB673601A true GB673601A (en) 1952-06-11

Family

ID=22075490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20481/50A Expired GB673601A (en) 1949-10-08 1950-08-18 Process for the recovery of vitamin b

Country Status (1)

Country Link
GB (1) GB673601A (en)

Similar Documents

Publication Publication Date Title
CH413247A (en) Process and device for the production of flat glass, as well as flat gas produced according to the process
GB673601A (en) Process for the recovery of vitamin b
GB1059669A (en) Process for purifying propylene oxide contaminated with methyl formate
GB1079461A (en) Recovery of fresh water from brine
GB650781A (en) Process for purification of solvents
GB951093A (en) Improvements in and relating to olefine oxides
CA597262A (en) Process for treating organic film-forming substances to modify the properties of products to be produced therefrom
ZA763797B (en) Process for the addition of alcohols to acetylenic compounds contained in organic or inorganic hydrocarbon streams
GB638393A (en) Improvements in and relating to the production of sterols and their addition products from material containing sterols
DK103721C (en) Process for the preparation of mixtures of ortho-, meta- and parater-phenyl, in which the content of one or two of the isomers is less than 10% by weight.
ES378040A1 (en) Process for the manufacture of boric acid
FR1193021A (en) Process for the separation of organic compounds, in particular mixtures of hydrocarbons
FR991592A (en) Process for the separation of organic compounds, in particular hydrocarbons
AU257325B2 (en) Process forthe separation of mixtures by means of distillation or absorption
AU748761A (en) Process forthe separation of mixtures by means of distillation or absorption
FR1001764A (en) Process for the separation of organic isomers
GB625355A (en) Improvements in or relating to the production of pesticidal compounds or mixtures comprising said pesticidal compounds
BE601471A (en) Process for the separation of novobiocin from associated impurities and product obtained.
FR1012345A (en) Process for the separation of constituents of hydrocarbon mixtures
GB1355357A (en) Gas absorption
FR1189393A (en) Process for the separation of isotopic varieties of water
GB914796A (en) Process for the purification of alkanols
BE581043A (en) Preparation of lime sapwood extract and product obtained by the process
GB980028A (en) Process for the production of pure monomeric formaldehyde
GB675247A (en) A process for the purification of the vitamins of the b group