A cleaning composition based on an aqueous or non-petroleum solvent, and
useful for cleaning exterior surfaces such as aircraft exterior surfaces
and other metal, glass, rubber and polymer surfaces possesses
solvent-like properties with respect to greasy soils; inhibits corrosion
and degradation of rubber; is biodegradable; forms a stable emulsion with
water; remains optically clear and stable at multiple dilutions with
water; and conforms to MIL-PRF 87937D. The composition includes at least
one fatty acid methyl ester, at least one ethoxylated alcohol having an
HLB ranging from about 10 to about 14, at least one alkyl polyglycoside
having an HLB ranging from about 10 to about 14, at least one hydrotrope,
an alkali metal silicate, at least one corrosion inhibitor in an amount
effective to prevent corrosion on metals, and water.