SDS hazard overview: Combustible, corrosive liquid. Exposure can burn skin and eyes and severely damage respiratory tissues. Inhalation, swallowing, and skin absorption may be harmful.
Handling: Avoid contact and inhalation of vapor or mist. Use suitable ventilation and protective equipment selected through the product SDS and site risk assessment. Keep away from ignition sources and control static discharge.
Storage: Keep suitable containers tightly closed, upright, dry, and in a well-ventilated location. The reviewed SDS specifies storage under inert gas. Confirm the required dry inert atmosphere, container compatibility, and storage conditions for the supplied grade.
Transport reference: UN 1742, BORON TRIFLUORIDE ACETIC ACID COMPLEX, LIQUID; Class 8 (corrosive), Packing Group II. Confirm the applicable shipment documentation and carrier requirements before dispatch.
Documentation before ordering: Request the current product SDS, relevant batch COA, and applicable packaging and dangerous goods transport information. Site personnel should review these documents before receiving and using the product.
Boron Trifluoride Acetic Acid Complex CAS 373-61-5
Liquid Boron Trifluoride Acetic Acid Complex CAS 373-61-5 from Aure Chemical
Boron trifluoride acetic acid complex (CAS 373-61-5) is a liquid Lewis acid reagent used in selected organic synthesis and BF₃-based catalyst systems. The product described here is the 1:2 BF₃/acetic acid complex, represented as BF₃·2CH₃COOH, with a reported BF₃ content specification of 35–37%. Aure Chemical supports China chemical sourcing, specification review, quality documentation, and international export coordination for this liquid grade.
BF₃ content is a component assay of the acetic acid complex. The reference COA reports BF₃ content and moisture separately and does not provide an overall complex purity assay.
Basic Information of Boron Trifluoride Acetic Acid Complex
Product identity, commercial specification, and SDS reference properties are summarized below. The reference batch results are presented separately in the Reference Quality Analysis section.
| CAS No. | 373-61-5 |
|---|---|
| EC No. | 206-768-5 |
| Complex Formula | BF₃·2CH₃COOH |
| Molecular Formula | C₄H₈BF₃O₄ |
| Molecular Weight | 187.91 g/mol |
| Appearance | Colorless to light yellow liquid |
| Reported BF₃ Content Requirement | 35–37% |
| Reference Density | 1.353 g/mL at 20 °C (SDS reference) |
| Reference Flash Point | 83 °C, closed cup (SDS reference) |
| Chemical Function | Liquid Lewis acid reagent and BF₃/acetic acid catalyst component |
| Moisture Sensitivity | Moisture-sensitive; protect from water and moist air |
| Transport Reference | UN 1742, BORON TRIFLUORIDE ACETIC ACID COMPLEX, LIQUID, Class 8, Packing Group II |
| Chemical Structure | ![]() |
Density and flash point above are reference values from the reviewed SDS, not measurements from the reference batch COA. The COA's separately reported 20 °C physical property is reproduced below.
Reference Quality Analysis
The following quality parameters provide a technical reference for evaluating liquid boron trifluoride acetic acid complex, including BF₃ content, moisture, appearance, and the physical property reported at 20 °C. The results represent one reference batch.
| Test Item | Reported Specification | Reference Result |
|---|---|---|
| Appearance | Light yellow to colorless liquid | Colorless liquid |
| BF₃ content | 35–37% | 35.94% |
| Moisture | ≤0.5% | 0.1635% |
| Specific gravity at 20 °C (COA wording) | 1.340–1.360 g/cm³ | 1.357 g/cm³ |
The COA labels the 20 °C property as “specific gravity” while giving g/cm³, a density unit. The original values and unit are retained here. Confirm whether the intended parameter is density or dimensionless relative density before agreeing a purchase specification.
Analytical methods and the basis of the reported percentages are not stated in the COA.
These analytical values support preliminary technical evaluation and should not be interpreted as guaranteed specifications for every shipment. Confirm the applicable BF₃ content range, moisture limit, physical property requirements, and relevant batch-specific Certificate of Analysis (COA) with Aure Chemical before ordering.
Primary Functions and Applications of Boron Trifluoride Acetic Acid Complex
Olefin oligomerization and catalyst system evaluation: BF₃/acetic acid catalyst systems have been studied for α-olefin oligomerization, including the conversion of 1-decene into polyalphaolefin (PAO) lubricant base oils. Suitability of this commercial grade depends on the complete catalyst formulation, feedstock, BF₃ content, moisture, and process conditions.
Organic synthesis and fine chemical intermediates: Used as an acid reagent or catalyst in selected transformations, including Fries rearrangement and desilylation chemistry. Specific routes require evaluation of substrate compatibility, solvent, reagent loading, and work-up conditions. Stereoselective processes require validation of the complete reaction system.
Review the BF₃ component assay and moisture limit when qualifying the product for a particular reaction. The reference COA does not establish reaction yield, selectivity, or catalyst performance.
Aure Chemical: Sourcing and Export Support
Aure Chemical is a chemical trading and export supply business supporting specification review and supplier coordination for liquid boron trifluoride acetic acid complex.
Product specification review: We support review of the BF₃ content range, moisture requirement, reported physical property, and any additional purchaser requirements using available supplier documentation.
Quality and safety documentation: Available batch COA, product SDS, and technical information can be requested before order confirmation. Additional analytical and regulatory documentation requirements are subject to confirmation.
China chemical sourcing and supplier coordination: Product availability, quantity, lead time, and packaging options are reviewed for the agreed liquid grade.
Packaging and international export logistics: Packaging compatibility, labeling, dangerous goods documentation, and shipping feasibility are reviewed according to the product, order quantity, route, carrier acceptance, and destination requirements.
Contact Aure Chemical with your required BF₃ content range, moisture limit, quantity, intended application, and delivery destination for a sourcing review.
Safety, Handling & Documentation
The following summary is based on the available SDS for the liquid acetic acid complex. Obtain the current supplied-grade SDS and confirm the applicable hazard classification and labeling for the destination jurisdiction before handling or shipment.

The reference pictogram reflects the reviewed SDS. Confirm the complete product label and applicable GHS classification using the current supplied-grade SDS.
Packaging
200 L steel drum
Final packaging, capacity and net weight are confirmed in the quotation and order.


