Standard samples and methods of instrumental measurement of ASTM color of petroleum products using said samples

• Main Authors: YAMAGUCHI, MASAHIRO, NIIZAWA, AKIHIKO
• Format: Patent
• Language: English; French; German
• Published: 22.04.1992
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; ADHESIVES; CHEMISTRY; DYES; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LAKES; LIQUEFIED PETROLEUM GAS; LUBRICANTS; LUBRICATING COMPOSITIONS; MEASURING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL GAS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICS; POLISHES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TESTING; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

A standard sample for use in an instrumental measurement of ASTM color of a petroleum product with a photoelectric colorimeter, which comprises a mixed solution 3-methyl-1-phenyl-4-(phenylazo)-pyrazol-5-ol, 1-(phenylazo)-2-naphthalenol, 1-[[4-[(dimethylphenyl)azo]dimethylphenyl]azo]-2-naphthalenol, 1,5(or 1,8)-bis[(4-methylphenyl)amino]-9,10-anthracenedione, 1-hydroxy-4-[(4-methylphenyl)amino]-9,10-anthracenedione, 1,4-bis(butylamino)-9,10-anthracenedione and 1,4-bis[(4-butylphenyl)amino]-5,8-dihydroxy-9,10-anthracenedione each as a colorant, 1-phenyl-1-xylylethane as a solvent for said colorants and dodecane as a diluent, and a method of instrumental measurement of ASTM color with the standard sample.