USP Grade Conversion Analysis

Input Parameters:

Chemical Name/CAS: Sodium Chloride / 7647-14-5

Current Grade: ACS Reagent Grade

Purity Percentage: 99.0%

Intended Use: Pharmaceutical formulation

USP Compliance Status

The current ACS Reagent Grade does not fully meet USP standards for pharmaceutical formulation. While ACS grade is high purity, USP-NF grade is specifically required for pharmaceutical applications to ensure compliance with additional testing parameters.

Equivalent USP Grade

Recommended Grade: USP-NF Grade (United States Pharmacopeia-National Formulary)

This is the appropriate grade for pharmaceutical formulations as it meets all USP monograph requirements for Sodium Chloride intended for medicinal use.

Required Purity Levels

Minimum purity: 99.0% (on dried basis)
Heavy metals: NMT 5 ppm
Loss on drying: NMT 0.5%
pH: 4.5-7.0 (5% solution)
Insoluble substances: NMT 0.01%

Regulatory Notes

Sodium Chloride USP-NF must comply with USP monograph <231> for heavy metals and endotoxin testing according to <85> if used in parenteral formulations. Additionally, testing for bacterial endotoxins is required if used in injectable products with a limit of NMT 5.0 EU/g.

Verification Steps

Request a Certificate of Analysis (CoA) confirming USP-NF compliance
Verify compliance through identification tests (flame test, precipitation with silver nitrate)
Perform assay testing to confirm sodium chloride content (titration method)
Conduct impurity testing (bromide, iodide, sulfate, calcium, magnesium)
Verify pH, loss on drying, and heavy metals meet specifications

Grade Conversion Recommendations

To convert from ACS Reagent Grade to USP-NF Grade, the following steps are required:

Source material directly from a USP-NF certified supplier
Ensure supplier provides full USP-NF compliant Certificate of Analysis
Implement additional testing protocols for USP-NF parameters not covered by ACS standards
Document the change control process for switching material grades
Update specifications and testing methods in your quality management system

Risk Assessment

High Risk

Potential presence of endotoxins if used in parenteral formulations
Inadequate documentation of USP compliance

Medium Risk

Possible heavy metal contamination above USP limits
Supplier change control management

Mitigation Strategy

Implement comprehensive testing protocol
Qualify minimum of two USP-NF certified suppliers
Conduct periodic audits of material suppliers

Analysis generated: May 15, 2023 | 14:32 UTC USP Reference: USP42-NF37

USP Grade Converter & Compliance Analyzer