Industrial chemicals · Taylor, TXTechnical Data Sheet
Propylene Glycol USP Grade
USP Grade
Identity & Composition
- 製品名
- Propylene Glycol USP Grade
- Alliance Code
- propylene-glycol-usp-grade
- Grade
- USP Grade
- 濃度
- —
- CAS番号
- 57-55-6PubChem
- 化学式
- C3H8O2PubChem
- 分子量
- 76.09PubChem
- 製品種別
- pure_substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (C3H8O2) | not less than 99.5 percent | 99.9 % | GC, thermal conductivity detector, 1-m x 4-mm column packed with 5% G16 on support S5, area normalization excluding air and water | Interpreted |
| Acidity | not more than 0.20 mL of 0.10 N sodium hydroxide is required | 0.04 | Titration of 10 mL with 0.10 N sodium hydroxide to phenolphthalein endpoint | Interpreted |
| Chloride | 0.007% | 0.00003 % | USP <221> | Interpreted |
| Heavy metals | 5 ppm | 0.5 ppm | USP <231> | Interpreted |
| Identification A (Infrared Absorption) | Infrared Absorption 〈197F〉 on undried specimen | Passes test | USP <197F> | Interpreted |
| Iron | 0.50 weight ppm (maximum) | 0.05 ppm | HOC 0290 | Interpreted |
| Limit of Diethylene Glycol | NMT 0.10% | 0.003% | GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard | Interpreted |
| Limit of Ethylene Glycol | NMT 0.10% | 0.002% | GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard | Interpreted |
| Residual solvents | Pass | Passes test | USP <467> | Interpreted |
| Residue on ignition | 0.0070 wt% max (3.5 mg from 50 g) | 0.0005 wt% | Ignition of 50 g, residue moistened with 0.5 mL sulfuric acid and ignited to constant weight | Interpreted |
| Sulfate | 0.006% | 0.0005 % | USP <221> | Interpreted |
| Suspended matter | Pass | Passes test | HOC 0171 | Interpreted |
| Water | not more than 0.2% | 0.03 % | USP <921> Method I (Karl Fischer) | Interpreted |
| Elemental impurities | Meets USP <232> / ICH Q3D oral limits | Passes test | USP <232> / <233>, ICP-MS | Interpreted |
| Microbial enumeration | TAMC ≤ 100 CFU/g; TYMC ≤ 10 CFU/g | Passes test | USP <61> | Interpreted |
| arsenic | 1 ppm max | 0.02 ppm | — | Interpreted |
| dp | 189 Deg.C max | 188.2 °C | — | Interpreted |
| dpg | 0.1 %m/m max | 0.03 %m/m | — | Interpreted |
| ibp | 185 Deg.C min | 186.8 °C | — | Interpreted |
| pb | 1 mg/kg max | 0.01 ppm | — | Interpreted |
| meg | 0.001 %m/m max | 0.0005 %m/m | — | Interpreted |
| oxidizing substances | 0.2 ml max | 0.03 | — | Interpreted |
| po | 0.001 %m/m max | 0.0002 %m/m | — | Interpreted |
| tpg | 0.03 %m/m max | 0.006 %m/m | — | Interpreted |
| residue | 0.005 % max | < 0.001 % | — | Interpreted |
Specification values are guaranteed limits. Typical values are representative of production lots and are not guaranteed. Lot-specific certificates of analysis ship with every order.
Available GradesSame CAS, alternate grades and concentrations
| Grade | 濃度 | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade USP Grade | — | — | current | current |
| — | 60% | — | propylene-glycol-60-inhibited | View TDS → |
| Technical | 60% | — | propylene-glycol-60-technical-grade | View TDS → |
| USP | 60% | — | propylene-glycol-60-usp-grade | View TDS → |
| USP Grade | 50% | — | 50-propylene-glycol-usp-grade | View TDS → |
| Technical Grade | 40% | — | 40-propylene-glycol-technical-grade | View TDS → |
| USP Grade | 40% | — | 40-propylene-glycol-usp-grade | View TDS → |
| — | 20% | — | propylene-glycol-20-inhibited | View TDS → |
| Technical | 20% | — | propylene-glycol-20-technical-grade | View TDS → |
| USP | 20% | — | propylene-glycol-20-usp-grade | View TDS → |
| Technical Grade | — | — | propylene-glycol-technical-grade | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | 値 | Source |
|---|---|---|
| 外観 | Thick odorless colorless liquid. Mixes with water. (USCG, 1999) | Published reference |
| Form | Liquid | Published reference |
| Color | 10 APHA (maximum) | Interpreted |
| 臭い | Pass | Interpreted |
| Specific Gravity (20 °C) | between 1.035 and 1.037 | Interpreted |
| Density | 1.04 at 68 °F (USCG, 1999) - Denser than water; will sink | Published reference |
| 沸点 | 189 deg C max | Interpreted |
| 融点 | -76 °F (NTP, 1992) | Published reference |
| 引火点 | 210 °F (NTP, 1992) | Published reference |
| 蒸気圧 | 0.08 mmHg at 68 °F ; 0.13 mmHg at 77 °F (NTP, 1992) | Published reference |
| Solubility (water) | greater than or equal to 100 mg/mL at 70 °F (NTP, 1992) | Published reference |
| Refractive Index (nD 20) | 1.4310 - 1.4330 | Interpreted |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- Not regulatedAdjudicated
- Hazard Class
- Not regulatedAdjudicated
- Packing Group
- Not regulatedAdjudicated
- Proper Shipping Name
- Not regulatedAdjudicated
GHS / OSHA HazCom 2012
- 注意喚起語
- Not regulatedAdjudicated
- H-Codes (Hazard Statements)
- Not applicableECHA CLP Annex VI
- P-Codes (Precautionary Statements)
- Not applicableECHA CLP Annex VI
許容濃度
- 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: ECHA CLP Annex VI for harmonised classifications, 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 USP Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Application Guidance
Propylene Glycol USP Grade (USP Grade) is a glycol-based heat-transfer and freeze-protection fluid. Concentration sets the freeze and burst protection; the inhibitor package sets how long the system stays protected from corrosion.
- Closed-loop heat transfer and process cooling
- Data-centre and chilled-water freeze protection
- HVAC hydronic loops and glycol makeup
- Freeze and burst protection for idle or seasonal systems
- Humectant and carrier applications (USP/food-grade propylene glycol only)
Verify concentration against the required freeze and burst protection, and confirm elastomer and metallurgy compatibility for the service temperature. Ethylene glycol is toxic by ingestion and must not be used where incidental food or potable contact is possible — specify a propylene glycol grade for those services.
Storage & Handling
- Recommended Storage
- Cool, dry, well-ventilated area in tightly sealed original containers. Neat glycols are combustible liquids with high flash points (roughly 99–111 °C) and do not require a solvent store; aqueous blends will not sustain combustion. Protect inhibited coolants from contamination and from freezing below their stated protection point.Class-level guidance — not product-specific; the SDS controls.
- Handling Precautions
- Chemical-resistant gloves and splash goggles. Ethylene glycol grades are toxic by ingestion and must be kept away from food, drink and animals; propylene glycol grades are not. 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 oxidizers, strong acids and strong bases. Galvanized (zinc) surfaces are attacked by many inhibited coolant packages. Verify elastomer and gasket compatibility for the service temperature; EPDM is standard for glycol/water service.Class-level guidance — not product-specific; the SDS controls.
- 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.
Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-06-17 by Andre Taki, DOT Hazmat Specialist.
| Version | Date | Change | Trigger |
|---|---|---|---|
| 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.