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CAS 1907-33-1 Lithium tert-butoxide solution
Overview
Lithium tert-butoxide (LiOtBu) liquid—CAS 1907-33-1—is a strong, non-nucleophilic lithium alkoxide supplied as stabilized solutions (typically 0.5–2.0 M) in THF, tert-butanol, or hydrocarbon solvents.Moisture/CO₂-sensitive and flammable—store dry under nitrogen/argon and handle per SDS.
Product Description
CAS 1907-33-1 Lithium tert-butoxide solution
It enables fast, selective base-mediated transformations—enolate formation/aldol-Claisen condensations, E2 eliminations, alkylations, directed metalations, and transesterification—and is widely used in API/intermediate synthesis, polymer & materials modification, and cross-coupling where the Li⁺ counter-ion offers distinct rate/solubility behavior versus Na/K analogs.
Lithium tert-butoxide (LiOtBu) Solution — Product Specification
Chemical name: Lithium tert-butoxide (solution) | CAS: 1907-33-1 (solute) | Formula: C4H9OLi | Function: Strong, non-nucleophilic base for organic synthesis
Identity & Grade Options
| Solvent systems | THF · tert-butanol · hydrocarbon (e.g., hexane/heptane) — per order |
|---|---|
| Concentration (typical) | 0.5 – 2.0 M (other upon request) |
| Filling & headspace | Pre-dried containers, nitrogen/argon headspace |
| Appearance | Colorless to pale yellow solution; clear to slightly hazy |
| Intended use | Industrial/R&D use only |
Typical Specification (example)
| Concentration (titration) | Label ± 0.03–0.05 M |
|---|---|
| Active base (as LiOtBu) | ≥ 98.0% of label (by acid–base titration) |
| Water (Karl Fischer) | ≤ 0.10% (THF/tert-BuOH grades); ≤ 0.05% (hydrocarbon grades) |
| Free tert-butanol | ≤ 1.0% (GC), unless specified solvent |
| LiOH/Li2CO3 (as Li) | ≤ 0.05% (w/w) total inorganic base |
| Residual solvents (GC) | Meet internal limits / report on COA |
| Metals (ICP-OES) | Na, K, Fe ≤ 10 ppm each (typical); others on request |
| Density @20 °C | Report per solvent & concentration (on COA) |
| Color (APHA) | ≤ 50 (typical) |
| Micro | Not applicable (non-aqueous, high-alkaline) |
Handling & Safety
| Hazards | Moisture/CO2 sensitive; corrosive; flammable (solvent-dependent) |
|---|---|
| Storage | Dry, tightly closed, under inert gas; protect from air/moisture/heat/ignition sources |
| Compatibility | Avoid protic solvents (unless specified), acids, oxidants, CO2, and water |
| Transport (DG) | Flammable liquid; UN No. depends on solvent system (see SDS/COA) |
Packaging & Logistics
| Small packs | 1 L / 2.5 L sealed bottles with PTFE-lined caps or septum closures |
|---|---|
| Bulk packs | 10–25 L metal/SS containers; larger upon request (inert-gas pressurized) |
| OEM options | Custom molarity, solvent, headspace, and labeling; returnable containers |
| Ports | Qingdao · Shanghai · Tianjin (DG-compliant export) |
| For quotation (specify) | Target molarity, solvent, pack size, impurity limits, destination port/country |
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Packing and delivery
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