Trimethyl Phosphate CAS 512-56-1 Specs & Bulk Procurement Guide

Technical Specifications and Purity Grades for Trimethyl Phosphate CAS 512-56-1

Procurement managers and R&D leads require precise physical data when integrating Phosphoric Acid Trimethyl Ester into production lines. Trimethyl Phosphate (TMP), also known as Trimethyl orthophosphate, is a colorless liquid with a slightly sweet odor. Its utility as a phosphate ester solvent and reagent depends heavily on consistent physicochemical properties. At NINGBO INNO PHARMCHEM CO.,LTD., we prioritize batch consistency to ensure downstream process stability.

The following table outlines the critical physical constants for industrial grade TMP. These values serve as the baseline for quality verification upon receipt.

Parameter	Standard Value	Test Condition
CAS Number	512-56-1	N/A
Molecular Formula	C3H9O4P	N/A
Molecular Weight	140.07 g/mol	N/A
Appearance	Clear Liquid	Visual
Density	1.197 g/mL	25 °C
Boiling Point	197 °C	Lit.
Melting Point	-46 °C	Lit.
Refractive Index	n20/D 1.395	20 °C

For detailed application data, engineers often review our high-purity Trimethyl Phosphate product page. Note that density variations can impact volumetric dosing systems; therefore, verifying the specific gravity against the batch-specific COA is essential for automated formulation lines.

CAS 512-56-1 Contamination Risks in GC-MS Purity Verification

Analytical verification of Trimethyl Phosphate often involves Gas Chromatography-Mass Spectrometry (GC-MS). However, standard purity assays may overlook specific degradation products that affect performance in sensitive applications, such as when used according to Trimethyl Phosphate API extraction solvent specifications.

A critical non-standard parameter often omitted from basic certificates is the thermal stability profile during distillation. Field experience indicates that residues from large-scale atmospheric pressure distillation of this chemical can pose explosion risks if heated improperly. Furthermore, trace hydrolysis products, such as dimethyl phosphate or methanol, may not always appear in standard purity percentages but can alter the pH profile of the final mixture. Procurement teams should request chromatograms that specifically flag low-molecular-weight alcohol impurities, as these can interfere with catalytic processes where TMP acts as a reagent.

Essential COA Parameters for Bulk Trimethyl Phosphate Procurement

When evaluating suppliers for bulk Trimethylphosphate, the Certificate of Analysis (COA) must extend beyond simple purity claims. A robust COA for CAS 512-56-1 should explicitly detail water content, acidity, and color metrics. Given the chemical's moisture sensitivity, water content is a critical failure point; levels exceeding specification can lead to hydrolysis during storage, generating acidic byproducts that corrode storage vessels.

Key parameters to validate include:

• Assay (Purity): Typically min 97% or 99%, depending on grade.
• Water Content: Must be verified via Karl Fischer titration.
• Acidity/Free Acid: Critical for preventing downstream corrosion.
• Color (APHA/Pt-Co): Ensures no oxidative degradation has occurred.

Always cross-reference these values with your internal quality standards. If specific numerical limits for your application are not listed in the standard COA, please refer to the batch-specific COA provided by the manufacturer upon request.

Industrial Bulk Packaging Standards and Stability for CAS 512-56-1

Physical integrity during transit is paramount for hazardous liquids. Trimethyl Phosphate is typically shipped in steel drums or Intermediate Bulk Containers (IBCs) designed to withstand standard logistics handling. The packaging must be sealed tightly to prevent moisture ingress, which triggers hydrolysis.

From a logistics perspective, we focus on robust physical packaging solutions such as 210L drums or IBC totes that comply with dangerous goods transportation regulations for toxic substances. It is vital to inspect the drum lining upon receipt. Any compromise in the internal coating can lead to container corrosion, given the chemical's reactivity profile. Stability during shipping is generally maintained provided the containers remain sealed and are not exposed to extreme thermal fluctuations that could expand the liquid volume beyond the drum's ullage capacity.

Moisture Sensitivity and Storage Protocols for CAS 512-56-1 Bulk Orders

Trimethyl Phosphate is classified as moisture sensitive. Upon delivery, bulk orders should be stored in a cool, dry, and well-ventilated area. The recommended storage temperature is below +30°C. Deviating from this protocol can accelerate degradation.

Engineering teams should note that while the melting point is -46 °C, viscosity shifts can occur at sub-zero temperatures, potentially affecting pumping rates in unheated winter storage facilities. Additionally, because the substance is toxic and suspected of causing genetic defects, storage areas must be equipped with secondary containment to manage spills effectively. Personnel handling the material must wear suitable protective clothing, gloves, and eye/face protection as per safety data sheet recommendations. Avoid exposure and obtain special instruction before use.

Frequently Asked Questions

What is the typical purity level for industrial grade TMP?

Industrial grades typically start at a minimum of 97% purity, though high-purity grades for synthesis may reach 99% or higher. Exact figures vary by batch.

How should Trimethyl Phosphate be stored to prevent degradation?

It must be stored below +30°C in a dry environment. Containers should remain tightly sealed to prevent moisture ingress which causes hydrolysis.

Is Trimethyl Phosphate soluble in water? Yes, it has significant water solubility (approx. 500 g/L at 25 °C), but it is also soluble in most organic solvents, making it a versatile medium for reactions. What safety precautions are required for handling CAS 512-56-1?

Handlers must wear protective clothing, gloves, and eye protection. It is toxic if swallowed or inhaled and may cause skin irritation.

Sourcing and Technical Support

Reliable sourcing of specialty chemicals requires a partner who understands both the chemical properties and the logistical challenges of hazardous materials. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing transparent technical data and secure supply chains for our global partners. We ensure that all shipments are packaged to maintain physical integrity and chemical stability during transit. To request a batch-specific COA, SDS, or secure a bulk pricing quote, please contact our technical sales team.