Aluminum Borohydride (Aluminum Tetrahydroborate) CAS 16962-07-5 Full Export Specification
1. Basic Chemical Identification
- IUPAC Name: Aluminum tris(tetrahydroborate)
- Aliases: Aluminium borohydride, Al (BH₄)₃, Aluminum hydroborate,
- CAS No.: 16962-07-5
- EINECS: Not available
- MDL No.: MFCD01740733
- Molecular Formula: \(\boldsymbol{Al(BH_4)_3,\ AlB_3H_{12}}\)
- Molecular Weight: 71.51
- SMILES: [Al+3].[BH4-].[BH4-].[BH4-]
- HS Code: 2931900090
- UN Number: UN 2870
- IMDG Hazard Class: Class 4.2 Spontaneously Combustible Substance + Subsidiary 4.3 Dangerous When Wet, Packing Group I
- ERG Guide No.: 135
- Signal Word: Danger (Extremely pyrophoric high-risk hazardous material)CAMEO Chem...
2. Physical & Chemical Properties
- Appearance: Clear, colorless volatile liquid with faint borohydride odor
- Melting Point: −64.5
- Boiling Point: 44.5 ℃ (760 mmHg, highly volatile at ambient temperature)
- Density (20 ℃): 0.549 g/mL
- Explosion range in air: 5–90 vol% (ultra-wide flammable hydrogen vapor range)
- Vapor Pressure: Very high volatility at room temperature; vapor heavier than air
- Solubility: Reacts violently with water, methanol, ethanol, carboxylic acid to release massive hydrogen, toxic borane fumes and intense heat; only soluble in fully anhydrous ether, THF under inert nitrogen protectionCAMEO Chem...
- Stability: Extremely unstable when exposed to air/moisture; slowly decomposes at room temperature releasing hydrogen; must be stored under strictly anhydrous nitrogen inert atmosphere all the time
- Core Extreme Hazards
- Pyrophoric: Self-ignites instantly upon contact with humid air or oxygen without external ignition source
- Water-reactive: Violent exothermic hydrolysis with any trace moisture, risk of hydrogen explosion
- Powerful strong reducing agent: Reacts explosively with oxidants, mineral acids, halogens
- Severe corrosive to skin, eyes and respiratory tract; borane vapor causes neurotoxicity and pulmonary injury; toxic via inhalation, skin penetration and ingestion
3. Standard COA Technical Specifications
Industrial Reduction / Aerospace Fuel Grade ≥99.0%
| Test Item | Standard Specification |
| Purity (Titration / GC) | ≥99.0 wt% |
| Free hydrogen impurity | ≤0.5 vol% |
| Moisture content | ≤10 ppm (ultra-dry mandatory index) |
| Free borane residue | ≤50 ppm |
| Residual ether solvent (if diluted) | ≤0.10% |
| Total heavy metals (Fe, Pb) | ≤1 ppm total |
| Appearance | Transparent colorless liquid, no suspended solids or precipitates |
4N Ultra-High Purity Reagent Grade ≥99.99%
Ultra-low trace metal & moisture; for high-selective lab reduction, aerospace research, semiconductor CVD boron/aluminum doping precursors
4. Main Industrial & Aerospace Applications
1. High-Selective Strong Reducing Agent (Core Civil Use)
High-efficiency mild reducing reagent for fine organic synthesis; selectively reduces aldehydes, ketones, esters, amides without damaging alkene/aromatic rings; used for pharmaceutical chiral intermediates, electronic-grade organometallic raw materials, other metal borohydride manufacturing
2. Aerospace High-Energy Liquid Fuel Additive (Military/Aerospace Core)
High-density hydrogen carrier; high-performance additive for jet engines and liquid rocket propellants, superior hydrogen storage capacity compared to traditional metal hydrides
3. Hydrogen Storage Material Research
Key chemical medium for fuel cell hydrogen storage; releases high-purity hydrogen under controlled anhydrous hydrolysis conditions
4. Semiconductor Thin Film CVD Precursor
4N ultra-pure grade serves as boron/aluminum doping source for semiconductor wafer film deposition
5. Special Air-Sensitive Lab Synthetic Reagent
Exclusive strong reducing agent for air-free organometallic chemistry, inorganic boride material preparation
5. Export Packaging, Storage & Transportation (Special Inert Sealed Packaging Mandatory)
Standard Packaging Options
- Bulk industrial grade: Thick seamless stainless steel pressure vessel, full vacuum nitrogen inert sealing, equipped with pressure relief safety valve; customized volume (5L/20L small pressure tank, 200L bulk pressure cylinder)
- Lab trial small package: 1L / 2.5L thick-wall stainless steel pressure ampoule, double vacuum nitrogen sealed, outer protective steel barrel with full moisture barrier aluminum foil composite wrapping
All pallets fixed with anti-vibration straps; full chain transport temperature strictly controlled ≤15 ℃, whole tank compartment maintained with dry nitrogen blanketing protection
Mandatory Storage Rules
- Dedicated independent Class4.2+4.3 high-risk hazardous chemical warehouse, fully anhydrous environment with humidity ≤10%, full explosion-proof negative-pressure inert ventilation
- All containers 100% vacuum nitrogen sealed; zero contact with air, water pipes, humid materials
- Strict segregate from oxidants, acids, alcohols, water-containing goods, food and daily supplies
- Equipped with dry sand fire suppression system (water/foam fire fighting strictly prohibited), hydrogen leakage alarm, emergency nitrogen purging pipeline
Ocean Transport Rules
UN2870 Class4.2 Spontaneously Combustible + Class4.3 Dangerous When Wet PG I top-level dangerous goods
- Only dedicated inert pressure-resistant hazardous chemical tank containers allowed; mixed loading with any water-containing, acidic, oxidizing cargo completely forbidden
- Entire transport container compartment must keep dry nitrogen inert atmosphere; complete special high-risk dangerous goods export documents required for customs clearance
- Air freight: Most airlines forbid shipment of UN2870 aluminum borohydride
6. GHS Full Hazard Statements & Mandatory PPE
Hazard Statements
- H250: Catches fire spontaneously if exposed to air (pyrophoric liquid)
- H260: In contact with water releases flammable gases which may ignite spontaneously
- H301: Toxic if swallowed
- H311: Toxic in contact with skin
- H314: Causes severe irreversible skin and eye burns
- H331: Toxic if inhaled (borane vapor neurotoxicity)
- H373: May damage nervous & respiratory organs via long-term inhalation
- H412: Harmful to aquatic life with long-lasting toxicity
Mandatory Full Isolation Protection PPE
- Positive-pressure full-face SCBA air respirator (ordinary filter masks are completely prohibited for all operations)
- Fully sealed explosion-proof chemical splash shield + thick anti-corrosion safety goggles (double isolation protection)
- Double-layer thick fluororubber fully impermeable solvent & water-reactive resistant gloves
- Flame-retardant fully sealed anti-corrosion chemical protective coveralls + heavy chemical resistant rubber boots
- Closed negative-pressure explosion-proof inert fume hood for all sampling, pumping and feeding (open-air handling forbidden entirely)
Spill & First Aid Emergency Treatment
- Spill disposal: Evacuate all personnel instantly, cut all ignition sources, block air circulation; fully cover leaked liquid with massive anhydrous dry inert sand (water, foam, wet absorbents strictly forbidden); collect waste sand + residual liquid into pressure-resistant sealed steel hazardous barrel under continuous nitrogen purging, send for professional incineration; never let any spillage contact moisture of any kind
- Skin contact: Immediately remove all contaminated clothing; first flush skin with large volume anhydrous isopropanol to neutralize residual hydride, then continuous massive clean water flushing ≥60 minutes; mandatory hospital toxic burn treatment
- Eye contact: Irrigate eyes with anhydrous ethanol first, followed by uninterrupted clean water flushing minimum 60 minutes, urgent ophthalmic rescue
- Inhalation: Move victim to pure nitrogen fresh air isolation area immediately, supply high-concentration oxygen, hospital neurotoxic observation
- Ingestion: Do NOT induce vomiting; only drink anhydrous edible oil to slow hydrolysis reaction, transport to toxic emergency center with SDS document
7. Foreign Trade Selling Advantages
- Two full grades: industrial reduction/aerospace bulk grade & 4N ultra-high purity semiconductor/lab grade; ultra-low moisture control eliminates self-ignition risks during cross-ocean transit
- Special stainless steel pressure vessel with vacuum nitrogen double sealing packaging, zero air/moisture contact, no spontaneous combustion or decomposition during long sea transportation
- Complete top-level Class4.2+4.3 PG I high-risk dangerous goods full export document set: CO
