2 5 dichloro 2 5 dimethylhexane ir spectrum July 8, 2019 16 32 64 128 2 5-dichloro-2 5-dimethylhexane melting point 2 5-dimethylhexan 2 5-dichloro-2 5-dimethylhexane ir 2 5-dimethylhexan-3-ol