Pharmaceutical Grade HFA-134a, also widely known as Norflurane (1,1,1,2-Tetrafluoroethane), is the global gold-standard hydrofluoroalkane propellant exclusively formulated for pharmaceutical aerosol manufacturing, pressurized metered-dose inhalers (pMDIs), respiratory drug delivery, nasal sprays and topical medicinal aerosols.
Unlike industrial-grade R134a refrigerant used for HVAC and cooling systems, pharmaceutical-grade HFA134a undergoes multi-stage rectification, moisture removal, acid purification and heavy metal filtration to meet strict USP-NF, European Pharmacopoeia (EP), and Japanese Pharmacopoeia (JP) purity requirements. It is a CFC-free, ozone-safe, non-flammable and low-toxicity propellant that completely replaces traditional ozone-depleting CFC propellants banned under the Montreal Protocol.
For pharmaceutical manufacturers, formulation laboratories and aerosol OEM factories, high-purity HFA-134a guarantees consistent aerosol particle size, stable drug suspension, precise metered dosing and long formulation shelf life - critical indicators for qualified respiratory drug delivery systems.
1. Why Pharmaceutical Grade HFA 134a Remains the Gold-Standard pMDI Propellant in 2026
Although low-GWP alternative propellants such as HFO-1234ze and HFA 152a have emerged in recent years, HFA-134a is still the most widely approved, clinically verified and manufacturing-friendly propellant for global pharmaceutical aerosol production. For B2B pharmaceutical buyers and formulation engineers, HFA-134a provides irreplaceable advantages in safety, consistency and regulatory compliance.
1.1 Superior Drug Delivery & Formulation Stability
High-purity HFA-134a delivers a stable vapor pressure and uniform atomization performance under standard production and storage temperatures (15–30°C). It maintains homogeneous suspension for steroid drugs, bronchodilators and combination formulations, ensuring consistent fine particle fraction (FPF) and reliable deep lung penetration for respiratory treatment. Unlike low-GWP alternatives that require formula restructuring, HFA134a is fully compatible with existing mature pMDI filling lines and drug formulas.
1.2 Full Global Regulatory Compliance
Our pharmaceutical HFA 134a is FDA DMF acknowledged, USP/EP/JP compliant, REACH registered and Montreal Protocol certified. It supports pharmaceutical factory registration, GMP workshop audit and global drug listing applications, helping manufacturers avoid compliance rejection and market access barriers.
1.3 Zero ODP, Low Toxicity; Non-Flammable Safety Profile
HFA 134a features zero ozone depletion potential, non-flammable properties and extremely low acute toxicity. It is safe for human respiratory exposure and suitable for long-term clinical medication, which is why it is still preferred for pediatric inhalers, chronic respiratory disease treatments and daily household medical aerosols.
2. Core Applications of Bulk Pharmaceutical HFA 134a
B2B pharmaceutical factories and aerosol formulators mainly apply our high-purity HFA134a in the following high-standard medical scenarios:
Asthma & COPD pMDI Inhalers：Albuterol, budesonide, glycopyrronium and combination respiratory therapies
Nasal Pharmaceutical Sprays：Steroid nasal sprays, decongestant aerosols and anti-allergy nasal formulations
Topical Medical Aerosols：Antiseptic sprays, wound care aerosols and skin treatment spray formulations
Emerging Needle-Free Drug Delivery：Pulmonary vaccine delivery systems and smart IoT inhaler devices
3. Technical Specifications of hFA 134a propellant
Physicochemical Properties
| Property | Specification |
|---|---|
| Chemical Name | 1,1,1,2-Tetrafluoroethane |
| Molecular Formula | CF₃CH₂F |
| Molecular Weight | 102.03 g/mol |
| Boiling Point | -26.3°C (-15.3°F) |
| Vapor Pressure | 5.7 bar at 20°C |
| Density (liquid, 25°C) | 1.21 g/cm³ |
| Ozone Depletion Potential (ODP) | 0 |
| Global Warming Potential (GWP) | 1430 |
Purity Specifications
Performance Characteristics
Particle size distribution: 1-5 μm (ideal for pulmonary delivery)
Dose uniformity: ≤5% variation between actuations
Temperature stability: 15-30°C operating range
4. How We Control HFA-134a Purity for GMP Pharmaceutical Production
As a professional bulk HFA134a supplier serving global pharmaceutical manufacturers, we implement full-chain quality control to ensure every batch meets pharmacopoeia-grade standards:
Multi-stage rectification purification：Remove heavy residues, organic impurities and moisture to ensure 99.99% ultra-high purity
Batch-by-batch full index testing：Provide complete COA batch certificate, spectrum identification report and impurity analysis
Professional transportation：Comply with IATA & IMDG dangerous goods standards for global shipping
5.Comparison with Alternative Propellants
| Parameter | HFA 134a | HFA 152a | HFA 227ea | HFO-1234ze |
|---|---|---|---|---|
| ODP | 0 | 0 | 0 | 0 |
| GWP | 1430 | 138 | 3220 | <1 |
| Boiling Point (°C) | -26.3 | -24.7 | -16.4 | -19 |
| Vapor Pressure (bar, 20°C) | 5.7 | 4.16 | 3.9 | 4.2 |
6. Buyer FAQ | B2B Pharmaceutical HFA134a Sourcing Questions
We sorted out the most frequently asked questions from global pharmaceutical purchasers, formulation engineers and quality audit teams:
Q1: Is your HFA134a fully compliant with USP, EP and FDA requirements?
A1: Yes. Our pharmaceutical-grade HFA134a strictly complies with USP-NF, European Pharmacopoeia and Japanese Pharmacopoeia standards, with FDA DMF acknowledgment and full REACH registration for global pharmaceutical market access.
Q2: What bulk packaging options do you provide?
A2: Standard industrial steel cylinder packaging, customized bulk ton packaging and long-term OEM supply solutions for large pharmaceutical factories.
Q3: Can you provide COA, SDS and pharmacopoeia certification documents?
A3: Yes. We provide free batch COA, safety data sheet (SDS), impurity testing reports and qualification documents for factory audit and product registration.
Q4: Is your HFA134a suitable for pediatric inhaler and sensitive drug formulations?
A4: Absolutely. Ultra-low impurity, zero acid content and stable atomization performance make it fully qualified for high-standard pediatric respiratory drug delivery systems.
Our Commitment to Quality & Sustainability
As a trusted supplier of Norflurane HFA 134a, we ensure:
✔ High-Purity Pharmaceutical Grade (meets global pharmacopeia standards)
✔ Strict Quality Control (batch testing for impurities, moisture, and stability)
✔ Sustainable Sourcing & Logistics (minimizing carbon footprint)
✔ Technical Support for Aerosol Manufacturers (formulation optimization, regulatory guidance)
Partner with a Trusted HFA 134a propellant Supplier
Norflurane HFA 134a remains the most reliable propellant for aerosol in pharmacy, offering unmatched performance in medicinal aerosols and aerosol industrial pharmacy applications.
As regulations evolve and next-generation propellants emerge, we continue to provide high-quality HFA 134a while supporting sustainable innovation in aerosol pharma.
Contact us today to discuss your pharmaceutical aerosol propellant needs and ensure your formulations meet the highest industry standards.
Our address
Room 1102, Unit C, Xinjing Center, No.25 Jiahe Road, Siming District, Xiamen, Fujan, China
Phone Number
+86-592-5803997
susan@xmjuda.com
