50 PCS T21 C-480 Catalyst MAO Toluene Solution Cylinders UN3399 Portable Tanks

UN3394 Storage TEAL TMA TIBAL Metal Alkyls  T21 UN Portable Tanks

UN3394/UN3398/UN3399 Storage TEAL TMA Metal Alkyls Cylinder 

T21 UN Portable Tanks 1.88m3

Container Marerial:  Q345r, 16MnDr,SA516

Mobile Tank Container, Alkyl Aluminum Storage Tank, UN3394/UN3398/UN3399, CCS Certified

Shell Thickness: 10mm 、12mm
Size Range: 2215X1190X1445mm
Specification: 1100mm
Volume: 1.88m³
Application Range: Alkyl Aluminum Transportation and Storage
Diameter: 1100mm
Net Weight: 1088kg
Temperature: -40~70℃
Pressure: 0.6-1.5MPa
Nozzles Purpose  Inlet, Outlet, Drain,etc: DN15/DN20/DN25  
Alkyl Aluminum Storage Tank: Safe and Reliable / Easy to Operate / Strong Sealing Performance

Linear Alpha Olefin (LAO)

Trimethylaluminum (TMA)| C3H9Al, UN 3394

Triethylaluminum  (TEAL) Triethyl aluminium / aluminum triethanide | C6H15Al ,UN 3394

Triisobutylaluminum (TIBAL) | C12H27Al, UN 3394

Triethylborane  ( TEB)| C6H15B,UN3399

Methylaluminoxane (MAO)

Methylaluminoxane, abbreviated as MAO, is a key organoaluminum compound with the chemical formula of [-Al(CH₃)O-]ₙ and CAS No. 120144-90-3. It is commonly used as a cocatalyst for metallocene catalysts in α-olefin polymerization. Meanwhile, it is classified as a high-risk hazardous chemical due to its high flammability, violent reaction with water, and strong corrosivity. The following is an elaboration from four aspects: core properties, preparation, applications, as well as safety and transportation.

I. Core Physicochemical & Safety Properties

II. Preparation Process

1. Mainstream Route (Hydrolysis Method): Trimethylaluminum (TMA) is used as the raw material, which reacts slowly with precisely metered water at low temperature in an inert solvent such as toluene to produce MAO and methane. The reaction is highly exothermic, requiring strict temperature control and ratio adjustment to prevent violent reaction or gelation.

2. Non-hydrolysis Method: Including hydroxyl-containing compound method, carbonyl compound method, etc., which are used to prepare high-activity MAO. However, the process is complex with high cost, resulting in limited industrial application.

3. Post-treatment: The reaction solution is concentrated under vacuum and filtered to remove insoluble substances, obtaining MAO toluene solutions with different concentrations, which are then stored in sealed containers under inert gas protection.

III. Main Applications

1. Polyolefin Industry: Serves as the core cocatalyst for metallocene catalysts, which can activate the metal center to form cationic active species. It is used in the production of high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), metallocene polypropylene (mPP), etc., significantly improving catalytic efficiency and polymer performance.

2. Material Synthesis: Applied in metalorganic chemical vapor deposition (MOCVD) for preparing semiconductors/photoelectric materials such as gallium nitride (GaN), as well as alkylation, reduction and other reactions in organic synthesis.

3. Scientific Research Field: A commonly used reagent in organometallic chemistry research, which is applied in catalyst design and mechanism exploration.

IV. Safe Operation & Transportation Specifications

(I) Key Safe Operation Points

• Conduct the entire operation in a water-free and oxygen-free environment protected by inert gas (argon/nitrogen), using equipment such as glove boxes and double-manifold systems.

• Wear chemical-resistant protective equipment (butyl rubber gloves, goggles, flame-retardant clothing), and equip with dry powder fire extinguishers, dry sand, emergency eyewashers/showers.

• Strictly prohibit contact with water, alcohols, acids, oxidants, etc. Dispose of waste materials by slow quenching with anhydrous ethanol or isopropanol before treatment.

(II) Transportation Requirements

1. UN Number & Category: UN3399 (Class 4.3, Substances which, in contact with water, emit flammable gases, organometallic compounds).

2. Packaging & Portable Tanks: Adopt portable tanks complying with IMDG CODE, ADR/RID such as T21. The material is high-strength steel compatible with MAO (e.g., SA-516M), equipped with safety devices including safety valves, gas-phase/liquid-phase valves, rupture discs, etc.

3. Transportation Restrictions:

￮ Air Transport: Permitted only on cargo aircraft, with a net quantity limit of 1L per package; strictly prohibited on passenger aircraft.

￮ Marine Transport: Stow on deck only, keep away from water sources, fire sources and oxidants, and equip with emergency treatment equipment.

￮ Land Transport: Comply with ADR/RID, use special hazardous goods transport vehicles, and drivers and escorts must hold valid certificates.

4. Inspection & Maintenance: Portable tanks shall be inspected regularly. The 2.5-year internal inspection can be replaced by alternative test methods or inspection procedures in accordance with the regulations of the competent authority or its authorized institution, but internal inspection is still required under specific conditions.