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| HS Code | 985798 |
| Product Name | IPA Sterile Isopropyl Alcohol 70% USP Grade |
| Chemical Name | Isopropyl alcohol (propan-2-ol) |
| Cas Number | 67-63-0 |
| Molecular Formula | C3H8O |
| Concentration | 70% v/v isopropyl alcohol in purified water |
| Grade | USP (United States Pharmacopeia) |
| Sterility | Sterile |
| Appearance | Clear, colorless liquid |
| Odor | Characteristic sharp alcohol odor |
| Boiling Point | Approximately 82°C at 760 mmHg |
| Flash Point | Approximately 19°C (closed cup) |
| Density | 0.877 g/mL at 20°C |
| Solubility | Miscible with water and most organic solvents |
| Ph | 5.0 to 8.0 (typical for aqueous solution) |
| Vapor Pressure | Approximately 30 mmHg at 20°C |
As an accredited IPA Sterile Isopropyl Alcohol 70% USP Grade factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in sterile, sealed 500 mL HDPE bottles with tamper-evident caps, ensuring purity and preventing contamination for safe use. |
| Container Loading (20′ FCL) | 20′ FCL loaded with palletized drums/cases of sterile IPA 70%, secured, labeled, and ventilated for safe transport. |
| Shipping | Shipping for IPA Sterile Isopropyl Alcohol 70% USP requires ground transport only due to flammability. It must be packaged in approved containers with proper hazard labeling and documentation. Air shipment is prohibited. Ensure compliance with DOT regulations and avoid extreme heat during transit. |
| Storage | Store in tightly closed, original containers in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Protect from direct sunlight and incompatible materials. Maintain container integrity to preserve sterility and concentration. Keep area clean and segregated, with proper labeling and secondary containment to prevent spills or contamination. |
| Shelf Life | Shelf life is 2-3 years unopened; once opened, use within 90 days to maintain sterility and effectiveness. |
On Grade B cleanroom surfaces adjacent to an aseptic filling isolator, sterile 70% isopropyl alcohol prepared from USP-grade isopropyl alcohol and USP Purified Water is applied as a routine, low-residue disinfectant for 316L stainless-steel workstations, pass-through chambers, and gloved ports. The 30% water fraction slows flash evaporation relative to 99% IPA, increasing surface contact time to 30–60 seconds against vegetative bacterial cells on pre-cleaned nonporous surfaces; this contact window is established by surface efficacy testing under EN 13697 or ASTM E1153-22. The solution is supplied in containers aseptically filtered through a 0.22 µm membrane and double-bagged; the outer bag is removed at the ISO Class 8 to ISO Class 7 material transfer boundary, and the inner bag is introduced through a validated material transfer hatch. Application is performed with low-lint polyester-cellulose wipes qualified to IEST-RP-CC004.3; cotton gauze is avoided because fiber release can raise airborne particle counts in ISO 14644-1:2015 Class 7 zones. Sterile 70% IPA is not sporicidal, and EU GMP Annex 1 (2022) sections 4.33 and 4.34 require routine disinfection programs to include a sporicidal agent on defined rotation; alcohol-only programs fail that expectation. At relative humidity above 60%, the residual water film after alcohol evaporation persists longer, and the surface must be visually dry before Grade A operations resume. Vapor accumulation in enclosed transfer chambers is controlled by local exhaust ventilation maintaining airborne levels below 200 ppm 8-hour TWA per ACGIH TLV.
Elastomeric closures entering a rotary vial filling line are wiped or sprayed with sterile 70% IPA immediately before the closure bowl and feed chute. The alcohol is intended to reduce vegetative bioburden on elastomer surfaces; it is not a terminal sterilization step, and closure sterility is typically established by gamma irradiation or steam sterilization before the IPA wipe. On 316L filling needles, dosing manifolds, and star wheels, sterile IPA is used between product campaigns and after line interventions, subject to written cleaning and sanitization procedures under 21 CFR 211.67. Residue after air-drying is low because USP-grade IPA contains no added surfactants or quaternary ammonium compounds; however, the 30% water phase can accumulate in equipment dead-legs if mechanical drying is not completed, creating a microbial growth niche. In closed isolators and RABS, repeated introduction of saturated wipes raises internal relative humidity and prolongs the post-use drying period before vaporized hydrogen peroxide bio-decontamination; EU GMP Annex 1 (2022) does not classify alcohol as a sporicidal agent, and 70% IPA is deployed only as a rotational general-purpose disinfectant alongside hydrogen peroxide or peracetic acid. Bromobutyl and chlorobutyl elastomers show no visible swelling after short-contact wiping, but continuous immersion in 70% IPA can extract low-molecular-weight oligomers and raise particle counts in post-fill inspection. Published data for specific proprietary closure formulations is limited, so each primary contact surface requires compatibility qualification under container closure integrity testing per USP <1207> rather than relying on IPA supplier generic data.
In hospital pharmacy compounding compliant with USP <797>, sterile 70% isopropyl alcohol is the standard disinfectant for critical sites before aseptic manipulation: vial stoppers, ampule necks, injection ports, and gloved fingertips. USP <1072> classifies 70% isopropyl alcohol as an intermediate-level disinfectant, not a sterilant. The technique requires scrubbing the rubber septum for 10–15 seconds with a sterile wipe pre-moistened with 70% IPA, then allowing the surface to dry completely; incomplete drying carries residual alcohol into the parenteral fluid during needle insertion and may produce a particulate or chemical incompatibility. The 70% concentration is selected because the aqueous 30% fraction enables denaturation of cytoplasmic proteins more efficiently than anhydrous IPA, while still evaporating quickly enough for workflow; however, USP <797> requires that all disinfectants in the primary engineering control be sterile and non-shedding. Bottles are single-use in the ISO Class 5 hood; a container opened at the start of a shift is discarded at the end of that shift because repeated opening introduces contamination. Sterile 70% IPA does not eliminate bacterial endospores, so sporicidal treatments with sodium hypochlorite or peracetic acid remain necessary for compounding areas with documented spore contamination. Surfaces in biological safety cabinets and laminar airflow workbenches are wiped in a unidirectional pattern from clean to dirty to avoid cross-contamination; the wipe is folded after each pass so that a fresh solvent surface contacts the next section.
| Application zone | Standard / regulation | Function | Boundary condition |
|---|---|---|---|
| Aseptic filling isolator / RABS | EU GMP Annex 1 (2022) sections 4.33–4.35 | Routine glove, tray, and tool disinfection | Not sporicidal; must rotate with sporicidal agent |
| Sterile compounding primary engineering control | USP <797>, USP <1072> | Vial stopper, ampoule neck, and injection port disinfection | Surface must dry fully; single-use bottle |
| Grade C/D packaging tooling | 21 CFR 211.67 | Stainless-steel hopper and blister tool disinfection | Residual water film may require dry-air purge |
| Medical device assembly tools | ASTM D543-20, 21 CFR 211.67 | Metallic tool disinfection | Isolate from polycarbonate and acrylic under stress |
Process engineers on cleanroom assembly lines for IV catheters, luer fittings, and pre-filled syringe components face a material compatibility boundary when applying sterile 70% IPA. Direct wiping of injection-molded polycarbonate hubs or acrylic manifold faces can propagate environmental stress cracking when the molded part retains internal stress from filling pressure or press-fit insertion; the cracking threshold decreases with repeated alcohol exposure. ASTM D543-20 is the standard laboratory practice for evaluating chemical resistance of plastics, and polymer suppliers frequently classify isopropyl alcohol as a conditional contact solvent for polycarbonate and polymethyl methacrylate, with maximum contact time below 60 seconds and immediate dry-air removal. In contrast, polypropylene, polyethylene, platinum-cured silicone, and 316L stainless steel tooling show no measurable mass change after short-contact exposure under the same ASTM D543-20 protocol. On high-speed assembly lines, alcohol is therefore restricted to metallic baseplates, bowl feeders, and stainless-steel grippers, while plastic product-contact surfaces are cleaned with dry heat or sterile 70% ethanol only after compatibility testing on molded parts. Published data for specific medical-grade resin compounds containing impact modifiers, radiopaque fillers, or low-friction additives is limited; qualification therefore relies on ASTM D543-20 immersion or wipe testing of actual molded components, not on generic resin datasheets. When IPA is applied near polycarbonate, the area must be inspected under polarized light for microcrazing before lot release.
Between upstream and downstream operations in monoclonal antibody or viral vector production, sterile 70% IPA is applied to needleless connectors, septum ports, and single-use tubing ends before aseptic disconnection or sampling. The port is wiped with a sterile pre-saturated wipe for 30–60 seconds and allowed to dry; this step reduces vegetative bioburden on external surfaces but does not sterilize the internal fluid path. Sterile tube welding is the only heat-based method that achieves full internal sterility; IPA disinfection is an adjunct, not a substitute. In single-use systems constructed from C-Flex, platinum-cured silicone, and polycarbonate sterile connectors, alcohol compatibility is qualified under ASTM D543-20; polycarbonate connector bodies require the same stress-cracking precautions described for medical device assembly. The solution is manufactured from WFI or USP Purified Water, filtered through a 0.22 µm membrane, and released with lot-specific sterility data under USP <71>; endotoxin is controlled to <0.25 EU/mL. Residual alcohol in the liquid path can stress production cells and alter product quality attributes, so drying is mandatory before sampling or inoculation. At relative humidity above 60%, drying is slower and operators may use a sterile dry wipe to remove residual liquid film after the contact time elapses.
Blister packaging tooling in Grade C/D pharmaceutical packaging areas is wiped with sterile 70% IPA between product changeovers. The 30% water content prolongs wet contact time on non-porous stainless-steel hoppers and forming dies, which supports a 60-second disinfection window for vegetative bacteria; however, the same water fraction leaves a transient film that must dry or be removed by dry-air purge before the tooling contacts hygroscopic powders or effervescent granulations. 21 CFR 211.67 requires documented cleaning and sanitization procedures, and packaging lines handling plant-derived excipients with spore-forming bacilli require periodic rotation to a sporicidal agent because 70% IPA does not inactivate bacterial endospores. Trigger spray application is confined to line stoppages and is never used near exposed powder or open hoppers; aerosolized droplets can carry nonvolatile residues from packaging components into the product, and vapor levels are maintained below 200 ppm 8-hour TWA through local exhaust ventilation. Pre-wetted wipes are introduced through material transfer hatches; the outer bag is recovered in the unclassified warehouse, the inner bag in the Grade D gowning area, and the wipe is used immediately to prevent moisture loss. No residual hypochlorite or quaternary ammonium compound is present, which avoids chloride-induced corrosion of stainless steel and printing dies.
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IPA Sterile Isopropyl Alcohol 70% USP Grade is a ready-to-use filtered disinfectant intended for surface decontamination, glove sanitization, and equipment transfer hygiene in pharmaceutical controlled environments. The nominal composition is 70 mL isopropyl alcohol per 100 mL solution, with the balance supplied as purified water or water for injection depending on the manufacturing route. The product is not a sporicidal agent; therefore it cannot be the sole sanitizer in an aseptic cleanroom rotation where bacterial spore control is required. Supplier-specific product codes generally encode the bottle volume, closure type, and sterility claim, but no universal model designation exists across all manufacturers. Procurement specifications should therefore state the following minimum text: sterile isopropyl alcohol 70% v/v, USP isopropyl alcohol source, filtered through a sterilizing-grade membrane, filled under ISO 5 conditions, and released to USP <71> sterility. The material is packaged in trigger-spray bottles, capped bottles, and refill canisters; final container choice affects cleanroom transfer procedures and alcohol vapor release.
The release specification for sterile 70% isopropyl alcohol intersects drug monograph, microbial, and particulate requirements. Because the diluted solution is prepared from USP isopropyl alcohol, the source alcohol should meet the USP Isopropyl Alcohol monograph requirements for identity, assay, residue on evaporation, water, and nonvolatile residue limits. The finished 70% solution is commonly tested for concentration by gas chromatography using flame ionization detection; commercial release ranges are often set at 68–72% v/v, although the exact supplier range may be narrower. Sterility is evaluated per USP <71> using membrane filtration or direct inoculation; a sterile article demonstrates no microbial growth after the incubation period. Endotoxin testing is performed using the Limulus amebocyte lysate method described in USP <85> when the product is labeled for critical cleanroom applications; a typical acceptance limit is <0.25 EU/mL.
| Quality attribute | Representative limit | Method or standard |
|---|---|---|
| Isopropyl alcohol assay | 68–72% v/v by gas chromatography | USP Isopropyl Alcohol monograph |
| Sterility | No growth after 14 days | USP <71> |
| Bacterial endotoxin | <0.25 EU/mL | USP <85> |
| Sterilizing-grade filter retention | No bacterial penetration through 0.22 µm membrane | ASTM F838-20 |
| Container closure integrity | Passes vacuum decay or dye ingress | USP <1207> |
Manufacturers of sterile 70% IPA typically rely on aseptic filtration through a validated 0.22 µm membrane; terminal autoclaving is generally not used because of the solution’s flammability and vapor pressure. This creates a quality-assurance boundary that is distinct from steam-sterilized components. The microbiological safety of the final product depends on filter integrity, aseptic filling proficiency, and container closure integrity rather than thermal lethality. Since aqueous 70% isopropanol is a Class IB flammable liquid with reported closed-cup flash points near 17–20 °C, terminal moist-heat or dry-heat sterilization introduces engineering and safety constraints. Published sterility assurance data for terminal irradiation of filled IPA bottles is limited and supplier-specific; therefore aseptic filtration remains the most commonly documented route. Fill operations are conducted under unidirectional airflow with personnel wearing sterile gowns, and filled containers are resealed using closure systems that support integrity testing per USP <1207>. This does not make IPA a substitute for validated depyrogenation; endotoxin control is dependent on the diluent and filtration train upstream of filling.
In aseptic compounding, USP <797> directs that surfaces in primary engineering controls be disinfected with sterile 70% isopropyl alcohol; however, the solution is a disinfectant, not a sterilant. Bacterial spores, particularly species of Bacillus and Clostridium, may tolerate alcohol exposure, so pharmaceutical controlled-environment sanitation programs rotate 70% IPA with a sporicidal agent such as hydrogen peroxide/peracetic acid or sodium hypochlorite at defined frequencies. Site sanitization validation should establish wet contact time, surface coverage, and wipe geometry. Operators typically saturate low-lint polyester or knitted polyester wipes outside the ISO 5 zone and transfer the damp wipes into the cabinet, avoiding direct aerosol generation into the unidirectional airflow. Airflow disruption is a process concern because primary engineering controls are operated within USP <797> air velocity expectations of approximately 0.36–0.54 m/s; gross inhibitor injection from trigger sprayers can disturb first-pass downflow and deposit alcohol outside the intended surface. Therefore spraying inside the cabinet is generally restricted. For gloved-hand sanitization, operators rub hands until the alcohol film evaporates; repeated exposure to 70% IPA is compatible with nitrile and chloroprene gloves but may reduce tactile grip and should be managed through glove change intervals.
In transfer disinfection, sterile 70% IPA is used to decontaminate outer surfaces of bags, vials, and wrapped components moved from ISO 7 or ISO 8 areas into ISO 5. The alcohol film must be allowed to dry before the material is placed in the critical zone. Residue on glass vials is generally minimal, but the low water content and fast evaporation rate can leave low-level nonvolatile residues on stainless steel if repeated applications are not buffed with a dry low-lint wipe. Field observations on pharmaceutical filling lines suggest that using heavily saturated wipes on flat stainless-steel transfer carts can create thin alcohol films that migrate into wheel bearings, causing temporary bearing noise and slower cart movement. Published data for this specific configuration is limited, but the operational boundary is resolved by using mechanically bound wipes and wetting them to dampness rather than gross saturation. The product should not be used to wipe hot surfaces above its flash point because vapor-air mixtures may ignite; this applies to drying tunnels and depyrogenation oven exteriors.
The primary differences among isopropyl alcohol products concern compendial purity, sterility, water content, and intended cleanroom use. Technical-grade isopropanol may contain acetone, benzene, and nonvolatile residues that are unsuitable for pharmaceutical contact surfaces. USP grade imposes identity, assay, and residue limits on the source alcohol. Sterile 70% USP IPA goes further by requiring sterility release per USP <71>, low endotoxin where specified, and packaging integrity appropriate for cleanroom transfer. Compared with 99% isopropanol, the 70% aqueous solution has slower evaporation and a persistent water phase that assists in denaturing microbial proteins and disrupting cell membranes. In contrast, 99% IPA evaporates rapidly, may leave limited water contact time for hydration of surface-bound microbial cells, and can fix protein debris to stainless steel if used alone. The lower alcohol concentration also reduces vapor loading in small rooms, but it does not eliminate flammability.
| Property | 70% USP sterile IPA | 99% technical-grade IPA | Non-sterile USP IPA |
|---|---|---|---|
| Water content | ~30% v/v | <1% v/v | ~30% v/v |
| Sterility release | USP <71> no growth | Not tested | Not required |
| Endotoxin limit | <0.25 EU/mL | Not specified | Not specified |
| Microbial penetration | Filtered through 0.22 µm membrane | Not controlled to sterilizing-grade | Not controlled to sterilizing-grade |
| Typical application | ISO 5 surface disinfection and transfer hygiene | Equipment cleaning and technical solvent use | General pharmaceutical cleaning where sterile alcohol is not required |
| Evaporation behavior | Slower; aqueous film persists | Rapid; minimal water film | Slower; aqueous film persists |
Although isopropyl alcohol is not an aqueous injection, endotoxin in disinfectants becomes relevant when surfaces contact sterile primary packaging components. If sterile 70% IPA is used to wipe rubber stoppers, vial trays, or filling needles prior to batch assembly, the low endotoxin specification may be justified based on the supplier’s diluent source and filtration train. Manufacturers that use Water for Injection as the diluent demonstrate a tighter bioburden and endotoxin profile than those using purified water, especially where purified water loops may exhibit seasonal biofilm release. A release limit of <0.25 EU/mL is common for solutions used in aseptic processing; this is measured by kinetic chromogenic LAL and is not directly comparable to parenteral drug product endotoxin limits. Filtration through 0.22 µm does not remove endotoxin, because lipopolysaccharide subunits can pass through sterilizing-grade membranes; therefore the diluent quality and upstream water system controls are the primary determinants of final endotoxin burden.
On pharmaceutical production lines, sterile 70% IPA contacts stainless steel, glass, and several polymer surfaces. In an aseptic filling line equipped with a rotary piston pump and stopper bowl, wipe-down protocols using saturated polyester wipes should not be applied on acrylic or polycarbonate glazing because stress cracking can occur after repeated alcohol exposure. Operators have observed haze and microcracking on polycarbonate view screens when 70% IPA is allowed to remain rather than evaporating freely; this is an operational boundary, not a product failure. Polyethylene and polypropylene containers are generally compatible, but flexible PVC tubing may show stiffening or plasticizer migration after prolonged contact. The product should not be mixed with quaternary ammonium compounds unless the sanitization program has demonstrated chemical compatibility and residue removal. Since the solution is flammable, storage per NFPA 30 and OSHA 29 CFR 1910.106 is required. Spent wipes must be collected in closed metal containers; local air permits may limit volatile organic compound discharge from drying wipes. In biological safety cabinets used for sterile compounding, the sequence is typically wipe from clean to dirty, allow the surface to dry, and then apply one directional pass on the work surface; published contact time data for 70% IPA against environmental isolates is limited, so site-specific disinfectant efficacy studies should support the chosen hold time.
