ASTM D632 / AASHTO M-143 — US/Canada Deicing Salt Standard
ASTM D632 + AASHTO M-143 US/Canada deicing salt standard. Grade 1 (4.75-9.5 mm coarse) + Grade 2 (2.0-4.75 mm fine). Egyptian sea + rock salt compliant. State DOT specs.
ASTM D632 / AASHTO M-143 — US/Canada Deicing Salt Standard
The US + Canadian deicing salt standard. State DOT (Department of Transportation) specs are typically AASHTO M-143 referenced, with ASTM D632 as the underlying material spec.
| Grade | Particle size | Use case |
|---|---|---|
| Grade 1 | 4.75-9.5 mm | Standard highway, slower melt, longer duration |
| Grade 2 (Fine) | 2.0-4.75 mm | Faster melt, municipal roads, intersections |
- NaCl ≥ 97%
- Moisture ≤ 1.5%
- Anti-caking: E535 sodium ferrocyanide ≤ 80 ppm typical
-
Egyptian Bulk Rock Salt for Deicing — US/Canada Grade 1 4.75-9.5 mm (
PS_ROCK_DEIC_US) -
Egyptian Bulk Rock Salt for Deicing — US/Canada Grade 2 2.0-4.75 mm Fine (
PS_ROCK_DEIC_US_FINE) -
Egyptian Bulk Sea Salt for Deicing — US/Canada Grade 1 4.75-9.5 mm (
PS_SEA_DEIC_US) -
Egyptian Bulk Sea Salt for Deicing — US/Canada Grade 2 2.0-4.75 mm Fine (
PS_SEA_DEIC_US_FINE)
Submit an RFQ — ASTM D632 / AASHTO M-143 deicing salt — for US/Canada highway authorities + state DOT contracts.
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