Solvent composition

A solvent composition for dissolving a compound having a perfluoropolyether group, comprising:

• Z-1,2-dichloro-3,3,3-trifluoropropene as a main component,
• wherein the compound having a perfluoropolyether group is a compound represented by formula (1) with a weight average molecular weight of 1300 or more and 8000 or less, a compound represented by formula (2) with a weight average molecular weight of 3200 or more and 23000 or less, a compound represented by formula (3) with a weight average molecular weight of 2000 or more and 11000 or less, or a compound represented by formula (4) with a weight average molecular weight of 1000 or more and 20000 or less:
• R1—[(OCF(CF3)CF2)m—(OCF2)n]—OR2 (1)
• R3—[(OC2F4)p—(OCF2)q]—OR4 (2)
• F—(C3F6O)r—R5 (3)
• R6O—(CF2O)s—(C2F4O)t—(C3F6O)u—(C4F8O)v—R7 (4)
• wherein, in the formula (1), m and n are integers of 1 or more, m+n=8 or more and 120 or less, and R1 and R2 are independently perfluoroalkyl groups having 1 or more and 4 or less carbon numbers,
• wherein, in the formula (2), p and q are integers of 1 or more, p+q=25 or more and 350 or less, and R3 and R4 are independently perfluoroalkyl groups having 1 or more and 4 or less carbon numbers,
• wherein, in formula (3), r is an integer of 10 or more and 80 or less, and R5 is a perfluoroalkyl group having 1 or more and 4 or less carbon numbers, and
• wherein, in formula (4), s, t, u, and v are integers of 1 or more, t/s=2 or more and 5 or less, (u+v)/(s+t+u+v)=0.07 or more and 0.2 or less, s/(s+t+u+v)=0.1 or more and 0.3 or less, and R6 and R7 are independently perfluoroalkyl groups having 1 or more and 4 or less carbon numbers.