Hexanes, ACS Grade, available in 500mL (No. 146450), 1L (No. 146451) and 4L (No. 146452) amber glass bottles.CH 3 (CH 2 ) 4 CH 3.APHA for oil and grease. APHA 5520-B, D. CAS No. 110-54-3.Formula Weight: 86.18.Shipping: Hexanes/UN1208.