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Picture of (1Z)-1-[[2,5-dimethyl-4-[(2-methylphenyl)diazenyl]phenyl]hydrazinylidene]naphthalen-2-one


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Origin: China

CasNo: 4477-79-6

specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

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  • Products Specification
  • Description
  • Property

    CAS No.: 4477-79-6 Formula: C25H22N4O Molecular Weight: 394.46800


    Solvent Red 26, also known as C.I. 26120, is a purplish red synthetic azo dye. It is soluble in oils and insoluble in water.
    Its main use is as a standard fuel dye in the US mandated by the US IRS to distinguish low-taxed or tax exempt heating oil from automotive diesel fuel, and by the EPA to mark fuels with higher sulfur content; it is however increasingly replaced with Solvent Red 164, a similar dye with longer alkyl chains, which is better soluble in hydrocarbons. The concentration required by IRS is a spectral equivalent of 3.9 pounds per 1000 barrels, or 11.13mg/l, of Solvent Red 26 in solid form; the concentrations required by EPA are roughly 5 times lower.

    Basic Info

    Chemical Name (1Z)-1-[[2,5-dimethyl-4-[(2-methylphenyl)diazenyl]phenyl]hydrazinylidene]naphthalen-2-one

    Calcogas Rocket Red;
    Oil Red N-1700;
    Oil Red Z-1700;
    Calco Oil Red N 1700;
    Oil Red OB;
    Oil Red GPD;
    Solvent Red 26;
    C.I. Solvent Red 26;
    Oil Red EGN;

    CAS No. 4477-79-6
    Molecular Formula C25H22N4O
    Molecular Weight 394.46800
    PSA 69.67000
    LogP 8.30140


    Density 1.18 g/cm3
    Boiling Point 591.6ºC at 760 mmHg
    Melting Point 130ºC
    Flash Point 311.6ºC
    Refractive Index 1.637

    Safety Info

    Safety Statements S26; S36
    WGK Germany 3
    Risk Statements R36/37/38
    Hazard Codes Xi

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