JPS5663965A - Stabilizing method of aqueous solution of urocanic acid - Google Patents

Stabilizing method of aqueous solution of urocanic acid

Info

Publication number
JPS5663965A
JPS5663965A JP16636379A JP16636379A JPS5663965A JP S5663965 A JPS5663965 A JP S5663965A JP 16636379 A JP16636379 A JP 16636379A JP 16636379 A JP16636379 A JP 16636379A JP S5663965 A JPS5663965 A JP S5663965A
Authority
JP
Japan
Prior art keywords
aqueous solution
acid
urocanic acid
urocanic
stabilizing method
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.)
Granted
Application number
JP16636379A
Other languages
Japanese (ja)
Other versions
JPS60352B2 (en
Inventor
Yoshimaru Kumano
Arata Nakamura
Sadaaki Tawara
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.)
Shiseido Co Ltd
Original Assignee
Shiseido Co 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 Shiseido Co Ltd filed Critical Shiseido Co Ltd
Priority to JP16636379A priority Critical patent/JPS60352B2/en
Publication of JPS5663965A publication Critical patent/JPS5663965A/en
Publication of JPS60352B2 publication Critical patent/JPS60352B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Cosmetics (AREA)

Abstract

PURPOSE: To prepare a stable aqueous solution of urocanic acid usable for a cosmetic having an ultraviolet light absorbing action, by preventing the discoloration of the solution due to the urocanic acid with Na or K salt of tripolyphosphoric acid or tetrapolyphosphoric acid added thereto.
CONSTITUTION: An aqueous solution of urocanic acid in an alkali is mixed with 0.01W1.0wt% one or two or more types of sodium and/or potassium salts of tripolyphosphoric acid or tetrapolyphosphoric acid to prevent the discoloration by light, heat, air, etc. with time into yellow brown to give a stable aqueous solution thereof.
COPYRIGHT: (C)1981,JPO&Japio
JP16636379A 1979-12-21 1979-12-21 Stabilization method of uroganic acid aqueous solution Expired JPS60352B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16636379A JPS60352B2 (en) 1979-12-21 1979-12-21 Stabilization method of uroganic acid aqueous solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16636379A JPS60352B2 (en) 1979-12-21 1979-12-21 Stabilization method of uroganic acid aqueous solution

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP52093096A Division JPS597708B2 (en) 1977-08-03 1977-08-03 Stabilization method of urocanic acid aqueous solution

Publications (2)

Publication Number Publication Date
JPS5663965A true JPS5663965A (en) 1981-05-30
JPS60352B2 JPS60352B2 (en) 1985-01-07

Family

ID=15830000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16636379A Expired JPS60352B2 (en) 1979-12-21 1979-12-21 Stabilization method of uroganic acid aqueous solution

Country Status (1)

Country Link
JP (1) JPS60352B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4823119A (en) * 1982-12-22 1989-04-18 Tokyo Shibaura Denki Kabushiki Kaisha Pattern write control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4823119A (en) * 1982-12-22 1989-04-18 Tokyo Shibaura Denki Kabushiki Kaisha Pattern write control circuit

Also Published As

Publication number Publication date
JPS60352B2 (en) 1985-01-07

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