Triisopropyl Borate (TIPB / Triisopropoxyborane) CAS 5419-55-6 Full English Export Specification

1. Basic Chemical Identification

• IUPAC Name: Triisopropoxyborane
• Common Names: Triisopropyl borate, Boric acid triisopropyl ester, Boron triisopropoxide, TIPB
• CAS No.: 5419-55-6
• EC/EINECS No.: 226-529-9
• MDL No.: MFCD00008872
• Molecular Formula: \(\boldsymbol{[(CH_3)_2CHO]_3B / C_9H_{21}BO_3}\)
• Molecular Weight: 188.07
• SMILES: CC(C)OB(OC(C)C)OC(C)C
• HS Code: 2920909090
• UN Number: UN 2416
• IMDG Hazard Class: Class 3 Highly Flammable Liquid, Packing Group II
• Signal Word: Danger

2. Physicochemical Properties

1. Appearance: Colorless transparent mobile liquid, mild faint ester odor; slight white mist forms in humid air due to hydrolysis
2. Melting Point: -59 °C
3. Boiling Point: 139–141 °C (760 mmHg)
4. Density (20°C): 0.862–0.868 g/mL
5. Refractive Index n20/D: 1.3760–1.3780
6. Flash Point (closed cup): 34 °C (high flammability)
7. Vapor Pressure: Low volatility at room temperature; vapor heavier than air, accumulates at low ground level
8. Solubility: Miscible infinitely with ethanol, isopropanol, ether, toluene, THF, hexane; rapidly hydrolyzes in water/moist air to generate white boric acid precipitate + isopropanol
9. Hygroscopicity: Strongly moisture-sensitive; must be sealed under nitrogen inert atmosphere to avoid turbidity
10. Stability: Stable under anhydrous nitrogen-sealed storage; incompatible with water, strong oxidants, strong mineral acids, alkali metals (Na, K, Mg)
11. Core Feature: Moderate boiling boron alkoxide, ideal raw material for boronic acid synthesis and semiconductor boron diffusion doping

3. Standard COA Technical Specifications

Industrial Organic Synthesis Grade ≥99.0%

Semiconductor Ultra-High Purity Grade ≥99.99% (4N)

• Total metal impurities (Na, K, Fe, Ca, Al, Cu) ≤1 ppb each
• Moisture ≤10 ppb, ultra-low particles, for silicon wafer boron diffusion source and CVD thin film deposition

Lab Reagent Grade ≥99.5%

• Strictly controlled hydrolysis impurities, for anhydrous Grignard and Suzuki coupling lab synthesis

4. Main Industrial Applications

1. Pharmaceutical & Fine Chemical Synthesis (Largest Consumption)

• Primary boron source for manufacturing aryl boronic acids/boronic esters via Grignard/organolithium addition, core intermediates for Suzuki-Miyaura cross-coupling reaction in anti-tumor, anti-viral APIs, antibiotics and heterocyclic drugs
• Transesterification reagent to synthesize trimethyl borate, triethyl borate and other alkyl borate series products
• Mild Lewis acid catalyst for esterification, ring-opening and condensation reactions of fine chemicals

2. Semiconductor & Photovoltaic Industry (4N Ultra-High Purity Grade)

• Boron diffusion source for monocrystalline silicon wafers, P-type doping of power semiconductors, IGBT chips and crystalline silicon solar cells
• CVD precursor for boron oxide passivation film, silicon nitride thin film deposition in chip manufacturing
• High-purity boron raw material for electronic borate ceramics and optical coating functional layers

3. Coating, Resin & Polymer Auxiliary

• Crosslinking catalyst for silicone resin, acrylic coating and polyurethane adhesive; improves coating hardness, weather resistance and substrate adhesion
• Flame retardant additive for textiles, plastic and rubber materials
• Heat stabilizer & anti-oxidant for PVC and thermoplastic polymer molding processing

4. Welding & Metal Surface Treatment

• High-efficiency soldering flux for aluminum/magnesium alloy welding; removes surface oxide film to enhance weld smoothness and bonding strength
• Anti-corrosion additive for industrial circulating cooling water and metal pipeline rust inhibitor

5. Laboratory Analytical Reagent

• Derivatization reagent for GC chromatographic detection of carbohydrates, polyols and polar organic compounds
• Standard boron source for preparing boric acid buffer solutions and qualitative heavy metal precipitation testing

5. Export Packaging & Storage Transportation

Standard Packing Options

1. Industrial bulk: 200L explosion-proof lined galvanized steel drum, nitrogen pre-sealed airtight cap, net weight ~173kg/drum
2. IBC anti-static composite plastic tank: 1000L for factory central feeding
3. Electronic/lab small packing: 1L / 2.5L amber pressure-resistant glass bottle filled with inert nitrogen
   
   
   All pallets wrapped with fully waterproof light-shield stretch film for long sea transit

Storage & Transit Mandatory Rules

• Warehouse: Cool, dry, ventilated Class 3 flammable chemical warehouse, storage temperature ≤25°C, isolated from heat, open flame, static sparks and humid environment
• Containers must remain fully nitrogen-sealed at all times to avoid moisture-induced hydrolysis and white boric acid precipitation
• Strict segregate from water sources, oxidants, strong acids, food raw materials and edible goods
• All loading/unloading equipment anti-static & explosion-proof; mandatory grounding operation
• Transport as IMDG UN 2416 Class 3 Flammable Liquid PG II; avoid high-temperature cargo holds, rain and violent collision during ocean shipment

6. GHS Hazard Statements & Mandatory PPE

Hazard Statements

• H225: Highly flammable liquid and vapor
• H303: May be harmful if swallowed
• H320: Causes serious eye irritation
• H335: May cause respiratory irritation via vapor inhalation
• H412: Harmful to aquatic life with long lasting toxic effects

Mandatory PPE

• Organic vapor half-face respirator for high-concentration transfer operation
• Fully sealed chemical safety goggles / full face shield
• Solvent-resistant thick nitrile rubber gloves
• Flame-retardant impermeable full-body protective overalls + anti-static rubber boots
• Closed explosion-proof local exhaust ventilation system for all sampling, feeding and transfer operations

Spill & First Aid Emergency Treatment

1. Spill disposal: Immediately isolate all ignition sources, evacuate irrelevant personnel; absorb leaked liquid with dry inert sand, prohibit water washing (accelerates hydrolysis and flammable vapor release); collect waste liquid into explosion-proof sealed hazardous waste steel barrel
2. Skin contact: Remove contaminated clothes instantly, rinse skin with plenty of soap and running water continuously for ≥15 mins
3. Eye contact: Flush eyes continuously with clean running water for 15 mins and seek emergency ophthalmic treatment
4. Inhalation: Move victim to fresh air at once; supply oxygen if dizziness, dyspnea or unconsciousness occurs
5. Ingestion: Do NOT induce vomiting, drink large volume clean water/milk and rush to hospital with SDS document

7. Foreign Trade Selling Advantages

1. Three complete grades: industrial synthesis grade, semiconductor 4N ultra-high purity grade, lab reagent grade to match pharmaceutical, electronic and fine chemical customer demands
2. Nitrogen-filled double-layer anti-moisture sealed packaging, effectively prevents hydrolysis turbidity and precipitate generation during long-distance ocean shipping
3. Strictly controlled low isopropanol, moisture and free acid impurities, high boron conversion efficiency for boronic acid & Suzuki coupling synthesis
4. Complete full set Class 3 flammable dangerous goods export documents (COA, English SDS, UN packaging certificate, IMDG maritime declaration, certificate of origin)
5. Flexible supply: Small trial drums, IBC bulk and full container FCL shipments acceptable

8. Full Set Export Supporting Documents

• Batch Certificate of Analysis (COA)
• English Version SDS Safety Data Sheet
• Dangerous Goods Packaging Certificate
• IMDG Maritime Dangerous Goods Declaration File
• Certificate of Origin
• Electronic grade trace metal impurity test report (for semiconductor clients)