Industrial chemicals · Taylor, TXTechnical Data Sheet
Propylene Glycol Inhibited ACS Grade
ACS Grade
- CAS number
- 57-55-6
- Structure
Structure · PubChem - Grade
- ACS Grade
Identity & Composition
- Product Name
- Propylene Glycol Inhibited ACS Grade
- Alliance Code
- propylene-glycol-inhibited-acs-grade
- Grade
- ACS Grade
- Concentration
- 95.6-96.4% w/w propylene glycol
- CAS Number
- 57-55-6PubChem
- Formula
- C3H8O2PubChem
- Molecular Weight
- 76.09PubChem
- Product Type
- Mixture
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Propylene glycol content | 95.6 - 96.4 % w/w | 96.0 % w/w | Formulation (batch weights) | Interpreted |
| Corrosion inhibitor package | 3.6 - 4.4 % w/w (nitrite-containing hybrid organic-acid) | 4.0 % w/w | Formulation (batch weights) | Interpreted |
| Nitrite (as NO2) | 2,400 ppm min. (calculated 2,650–5,300 ppm at the 4.0% dose) | Conforms | Formulation minimum (calculated from inhibitor dose) | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Clear, colorless viscous liquid | Adjudicated |
| Form | Liquid | Adjudicated |
| Odor | Practically odorless | Adjudicated |
| pH | 7.0 - 9.0 (typical) (50% in water) | Interpreted |
| Specific Gravity | 1.043 at 20/20 °C (water = 1) | Adjudicated |
| Density | 1.0409 g/cm³ at 20 °C | Adjudicated |
| Boiling Point | 370.8 °F at 760 mmHg (NTP, 1992) | Adjudicated |
| Melting Point | -76 °F (NTP, 1992) | Adjudicated |
| Flash Point | 210 °F (NTP, 1992) | Adjudicated |
| Vapor Pressure | 0.08 mmHg at 68 °F ; 0.13 mmHg at 77 °F (NTP, 1992) | Adjudicated |
| Solubility (water) | Miscible with water in all proportions | Adjudicated |
Freeze Point by DilutionConcentrate diluted with water
| Glycol, % by weight (w/w) | Glycol, % by volume (v/v) | Freeze point, °F | Freeze point, °C |
|---|---|---|---|
| 20 | 19.4 | 19.2 | -7.1 |
| 25 | 24.4 | 14.7 | -9.6 |
| 30 | 29.4 | 9.2 | -12.7 |
| 35 | 34.4 | 2.4 | -16.4 |
| 40 | 39.6 | -6.0 | -21.1 |
| 45 | 44.7 | -16.1 | -26.7 |
| 50 | 49.9 | -28.3 | -33.5 |
| 55 | 55.0 | -42.8 | -41.6 |
| 60 | 60.0 | -59.9 | -51.1 |
Typical values from published industry reference data for propylene glycol and water, not a specification. Glycol content is shown on both bases: percent by weight (w/w) and percent by volume (v/v) of the finished solution.
Regulatory & Transport
DOT / 49 CFR
- UN Number
- Not regulatedAdjudicated
- Hazard Class
- Not regulatedAdjudicated
- Packing Group
- Not regulatedAdjudicated
- Proper Shipping Name
- Not regulatedAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- Not regulatedAdjudicated
- H-Codes (Hazard Statements)
- Not applicableECHA C&L Inventory
- P-Codes (Precautionary Statements)
- Not applicableECHA C&L Inventory
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- —no canonical
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Propylene Glycol Inhibited ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Laboratory, research or manufacturing use (ACS reagent grade material)digitalassets.avantorsciences.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Keep tightly closed (hygroscopic) in a cool, dry place away from oxidizers. Stainless steel, carbon steel, polyethylene or polypropylene containers.Adjudicated
- Handling Precautions
- Chemical-resistant gloves and splash goggles. Avoid contact with hot surfaces and hot process equipment. Inhibitor packages deplete in service — monitor rather than top up blindly.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Strong oxidizing agents; strong acids; strong bases.Adjudicated
- Shelf Life
- Consult Technical Services for product-specific shelf life
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
Not regulated for transport.
A package holding 11,300 lb (5,150 kg), about 1,290 US gal, or more of this product contains a reportable quantity (RQ) and ships as:
UN3082, Environmentally hazardous substance, liquid, n.o.s. (Sodium nitrite), 9, III, RQ
Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.4 | 2026-11-09 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-09-30 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-06-17 | Canonical data re-verified: 3 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.