{
  "id": "UN1133",
  "name": "perm (0 \u00b0C)",
  "ml_name": "ip_perm_(0_deg_C)",
  "symbol": "perm",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#P"
}