Propylene Glycol: grade & concentration comparison
Alliance Chemical stocks 11 variants of Propylene Glycol (CAS 57-55-6): USP Grade 50%, Technical Grade 40%, USP Grade 40%, Technical Grade, USP Grade. Compare grade, concentration, and transport classification below, then open the SDS, technical data sheet, or certificate of analysis for the variant you need.
CAS 57-55-6 · 11 variants
| Variant | Grade | Concentration | Hazard | Documents |
|---|---|---|---|---|
 Propylene Glycol 50% – USP Grade (C3H8O2) | USP Grade | 50% |   | SDSTDSCOA |
 Propylene Glycol 40% – Technical Grade | Technical Grade | 40% | | SDSTDSCOA |
 Propylene Glycol 40% – USP Grade (C3H8O2) | USP Grade | 40% | | SDSTDSCOA |
 Propylene Glycol 20% Inhibited | — | — | | SDSTDSCOA |
 Propylene Glycol 20% Technical Grade | — | — | | SDSTDSCOA |
 Propylene Glycol 20% USP GRADE | — | — | | SDSTDSCOA |
 Propylene Glycol 60% Inhibited | — | — | | SDSTDSCOA |
 Propylene Glycol 60% Technical Grade | — | — | | SDSTDSCOA |
 Propylene Glycol 60% USP Grade | — | — | SDSTDSCOA | |
 Propylene Glycol Technical Grade | Technical Grade | — | | SDSTDSCOA |
 Propylene Glycol USP Grade | USP Grade | — | | SDSTDSCOA |
About these grades
All variants share CAS 57-55-6. Grade and concentration determine purity specification and strength; each variant's exact specification, hazard classification, and a certificate of analysis are published by Alliance Chemical and linked above. Lot-specific certificates ship with every order.