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Propane

IntroductionCategoryDetailsPhysical Properties– Chemical Formula: C₃H₈– Molecular Weight:

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Introduction

CategoryDetails
Physical Properties– Chemical Formula: C₃H₈

– Molecular Weight: 44.1 g/mol

– Density (Gas): 1.882 kg/m³ (0°C, 1 atm); (Liquid): 580 kg/m³ (-42°C)

– Boiling Point: -42.1°C (231.1 K)

– Autoignition Temperature: 470°C (878°F)

– Explosive Range: 2.1–9.5% volume in air
Technical Specifications– Purity: 95–99% (commercial grade); ≤0.1% H₂O/H₂S (high-purity)

– Pressure: 138 bar (20°C, liquid in cylinders); 8.5 bar (vapor at 25°C)

– Cylinder Sizes: 10 kg, 35 kg, 100 kg (portable); 6.000–18.000 gallons (bulk storage)

– Valve Types: POL (US), DIN 477 (EU), and ASME (industrial)

– Flow Rate: 0.5–50 kg/h (adjustable via regulator)

– Purity Analysis: GC-FID (Gas Chromatography with Flame Ionization Detector)
Key Applications– Residential/Commercial: BBQ grills, heating, and hot water systems

– Automotive: LPG (liquefied petroleum gas) vehicles

– Industrial: Oxy-fuel cutting/welding, boiler fuel, and petrochemical feedstock

– Refrigeration: Low-temperature applications (-45°C to -50°C)

– Aerosol Propellant: Non-flammable formulations (with CO₂/N₂)
Safety Data– CAS No.: 74-98-6

– UN Number: 1075 (liquefied)

– NFPA 704: Health 1. Flammability 4. Reactivity 0

– Fire Risk: Extinguish with dry chemical/CO₂; avoid water spray (may freeze)

– Leak Detection: Use hydrocarbon sniffer tools (avoid open flames)
Storage & Handling– Pressure Vessels: ASME-certified cylinders (≤15 years service life)

– Ventilation: Ensure ≥20 air changes/hour in enclosed storage areas

– Temperature: Store below 40°C; avoid direct sunlight

– Bulk Tanks: Buried or above-ground installations with corrosion protection
Certifications– ASTM D1835: LPG specifications (purity, odorization)

– ISO 9001: Quality management systems for production/distribution

– OSHA 29 CFR 1910: Flammable liquids/gases regulations
Environmental Impact– Greenhouse Gas: GWP ≈20 (CO₂ equivalent over 20 years)

– Ozone Depletion: Zero (replaced CFCs in refrigeration)

– Leak Mitigation: Vapor recovery systems for bulk storage
Quality Control– Traceability: Lot-specific MSDS and gas chromatography reports

– Odorization: Ethyl mercaptan (0.1–1 ppm) for leak detection

– Shelf Life: Indefinite if stored in sealed cylinders (pressure loss ≤1%/year)
 

Disclaimer: The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.


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