Description

Sulfate Standard CAS NO 14808-79-8 is a high-purity analytical reference material, essential for accurate quantitative and qualitative analysis in laboratory settings. This certified standard provides a reliable benchmark for calibrating instruments and validating analytical methods, ensuring data integrity and regulatory compliance. It is a critical reagent for quality control laboratories in the pharmaceutical, environmental testing, food & beverage, and industrial chemical sectors where precise sulfate ion measurement is required.

Application

• Analytical Method Calibration: Primary standard for calibrating ion chromatography (IC), turbidimetry, and other analytical techniques for sulfate determination.
• Pharmaceutical QC Testing: Used in purity testing, limit tests for sulfates, and assay validation as per pharmacopeial standards (USP, EP, JP).
• Environmental Analysis: Critical for testing sulfate levels in water (drinking, wastewater, seawater) and soil samples to monitor pollution and compliance.
• Food & Beverage Industry: Employed in the analysis of food additives, mineral water, and beverages to ensure product safety and label accuracy.
• Industrial Process Control: Serves as a reference in chemical manufacturing, power generation, and metallurgy to monitor process streams and effluent quality.
• Clinical Diagnostics: Used in the calibration of equipment for analyzing sulfate in biological fluids for research and diagnostic purposes.

Basic Information

Product Name	Sulfate Standard
CAS No.	14808-79-8
Molecular Formula	K2SO4
Molecular Weight	174.26 g/mol
Synonyms	Potassium Sulfate Standard; Sulfate Ion Standard; Potassium Sulphate CRM; Analytical Standard for Sulfate; Sulfate Reference Material; SOP Standard; ARCOSOLV® Potassium Sulfate (for specific high-purity grades); Dipotassium Sulfate
EINECS	231-915-5

Quality Control

Every batch of our Sulfate Standard is manufactured and certified to meet the highest standards of purity and traceability. Quality is assured through rigorous testing via ion chromatography, gravimetric analysis, and titration against NIST-traceable references. A comprehensive Certificate of Analysis (COA) is provided with each unit, detailing the exact assay value, uncertainty, and test results for impurities. Our quality system supports compliance with ISO 17034, ISO/IEC 17025, and relevant pharmacopeial guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed in a dry environment to prevent absorption of atmospheric moisture, which could affect the concentration and stability of the standard solution.

Specification

Item	Specification
Appearance	Colorless, clear solution
Identification (IR)	Conforms
Assay (as SO42-)	1000 mg/L ± 2 mg/L (or as certified)
Purity (on dry basis)	≥ 99.9%
Chloride (Cl)	≤ 5 ppm
Nitrate (NO3)	≤ 5 ppm
Heavy Metals (as Pb)	≤ 1 ppm
pH (25°C)	5.0 - 7.0
Water (Karl Fischer)	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.