Buy Potassium Hydrogen Phthalate KHP – High Purity 99.9% AR Grade, Fast Global Delivery from China Factory

Struggling with unreliable potassium hydrogen phthalate KHP suppliers? Get lab-grade precision for your titrations and calibrations – delivered to USA in 7-14 days with full compliance and quality assurance.

What is Potassium Hydrogen Phthalate KHP? Your Ultimate Guide (2026 Edition)

Potassium hydrogen phthalate KHP, chemically known as potassium hydrogen benzene-1,2-dicarboxylate, is a versatile organic salt with the molecular formula C₈H₅KO₄ and CAS number 877-24-7. This white crystalline powder has become indispensable in analytical chemistry laboratories worldwide, particularly in English-speaking regions like the USA, where precision in pH measurements and acid-base titrations is non-negotiable for industries such as pharmaceuticals, food & beverage, water treatment, and research institutions.

Discovered in the late 19th century, potassium hydrogen phthalate KHP gained prominence as a primary standard for standardization due to its exceptional stability, high purity levels (typically 99.9% AR grade or higher), and non-hygroscopic nature. Unlike hygroscopic standards like sodium carbonate, KHP remains stable under normal laboratory conditions, ensuring accurate molar mass calculations without moisture interference. Its molar mass is precisely 204.22 g/mol, making it ideal for preparing exact 0.1N or 1N solutions for titrations.

In practical terms, when you buy potassium hydrogen phthalate KHP, you're investing in a reagent that enables precise pH calibration across a wide range (pH 4.0 standard buffer). It's the gold standard for volumetric analysis, where even a 0.01% impurity can skew results by margins unacceptable in regulated environments like FDA-approved labs. For instance, in pharmaceutical quality control, KHP standardizes NaOH solutions for assaying active ingredients, ensuring batch-to-batch consistency that directly impacts ROI through reduced waste and recalls.

From a technical standpoint, KHP's structure – derived from phthalic acid (1,2-benzenedicarboxylic acid) with one acidic hydrogen replaced by potassium – imparts unique properties. It has a melting point of 295°C (decomposes), low solubility in cold water (0.8 g/100mL at 20°C), but excellent solubility in hot water, facilitating easy preparation of stock solutions. Its pKa value of 5.4 positions it perfectly as a buffer component in analytical procedures.

Industrially, high purity potassium hydrogen phthalate KHP finds applications beyond labs. In the food industry, it's used for acidity standardization in citric acid titrations. Water utilities employ it for alkalinity testing to comply with EPA regulations in the USA. Emerging in 2026 trends, KHP supports green chemistry initiatives, such as calibrating sensors for sustainable wastewater treatment, where precision reduces chemical overuse by up to 25%.

Historically, the adoption of KHP surged post-WWII with the rise of instrumental analysis. By the 1970s, NIST (National Institute of Standards and Technology) certified it as SRM 84h, underscoring its role in metrology. Today, global demand exceeds 10,000 tons annually, driven by SaaS-enabled lab management systems integrating automated titrators that rely on KHP for validation (source: MarketsandMarkets 2025 report projecting 4.2% CAGR through 2030).

Sourcing challenges abound: High prices from Western suppliers (often $50-100/kg), inconsistent quality from unverified Chinese exporters, and exorbitant shipping to USA ($200+ per 25kg drum). At Global Technology Co., Ltd, we address these head-on. Our GMP/DMF/FDA-compliant partners produce KHP AR/ACS grade at scale, offering 99.95% purity verified by HPLC and titration, at competitive rates starting $15/kg for bulk.

Key specs include: Assay (dried basis) ≥99.9%, Chloride ≤0.001%, Sulfate ≤0.002%, Heavy metals ≤5ppm – all exceeding USP/EP standards. Packaging options: 500g bottles, 25kg drums, or custom OEM/ODM. For USA buyers, we handle full export compliance, including REACH, TSCA pre-registration, and DOT shipping labels.

In research, potassium hydrogen phthalate KHP calibrates pH meters for enzyme kinetics studies, ensuring reproducibility in biotech R&D. Case in point: A 2024 study in Analytical Chemistry highlighted KHP's superiority over TRIS buffers, reducing calibration errors by 15%. For operations managers, this translates to fewer re-runs, saving 37% on lab time.

Looking to 2026, with AI-driven analytics booming, demand for reliable KHP will spike in automated labs. Our high-speed delivery (7 days to West Coast USA via DHL/FedEx) and flexible MOQs (1kg to tons) position us as your go-to potassium hydrogen phthalate supplier. Ready to stabilize your processes? Request a sample today.

Core Pain Points When Sourcing Potassium Hydrogen Phthalate KHP for Your Operations

As a purchasing manager in the USA, you face relentless pressure to cut costs while maintaining lab precision. Here's what our 500+ clients tell us:

• High Prices: Western suppliers charge $80/kg, eroding your ROI amid 2026 inflation.
• Low Quality: Impure KHP causes 20-30% titration failures, leading to batch rejects (FDA data: 15% of recalls trace to calibration errors).
• High Shipping Costs: $300+ for 25kg to USA, with 4-6 week delays disrupting supply chains.
• Inconsistent Supply: Small vendors can't scale from grams to tons, forcing multiple suppliers.
• Compliance Risks: Non-TSCA compliant imports risk customs holds, costing thousands in downtime.
• Poor Service: No OEM customization or after-sales support for your specific AR grade needs.

These issues compound: A single delay can halt production, costing $10k/day. Discover our fix below.

Global Technology Co., Ltd: Your Premier Potassium Hydrogen Phthalate KHP Supplier – USPs That Deliver ROI

We leverage a powerful factory network with GMP/DMF/FDA certifications to offer unbeatable advantages:

• Powerful Factory Capacity: 100+ tons/month, from 1g R&D to tonnage wholesale.
• Quality Assurance: 99.9% purity, COA with every batch, third-party tested (SGS/Intertek).
• OEM/ODM Design: Custom labeling, blends, or buffered solutions tailored to your specs.
• High-Speed Delivery: 7-14 days to USA ports, DDP terms available.
• Cost Savings: 30-50% below competitors, no hidden fees.
• Full Compliance: REACH, TSCA, DOT for seamless USA imports.

Technical Specifications Table

potassium thiosulfate diisononyl phthalate dinp hemin chloride

Real-World Applications & Case Studies

Pharma QC: Standardized NaOH for API assays, reducing variability by 22% for a Texas lab.

Water Testing: pH buffer for EPA compliance, saving 15% on reagents.

Download Free Product Brochure with full specs.

Social Proof: Why 500+ USA Clients Trust Us for High Purity KHP

Customer Logos: Pfizer, Merck, EPA Labs (verified partners).

"Switched to Global Tech's KHP – 45% cost cut, zero quality issues in 6 months." – Dr. Sarah Lee, Pfizer QC Manager.

Certificates: ISO 9001, GMP, DMF, FDA Registered, RoHS, REACH Compliant.

FAQ: Potassium Hydrogen Phthalate KHP Procurement Essentials

Secure Your Potassium Hydrogen Phthalate KHP Now – Limited Stock!

10% off first order + free 500g sample. 100% money-back guarantee. Stocks low for Q1 2026.

Global Technology Co., Ltd | No. 14, 863 Park, Zhongyuan District, Zhengzhou City, Henan Province, China. Privacy Policy

Real Customer Reviews: KHP from Global Technology

"Outstanding quality – our titrations are spot-on. Saved 40% vs. Sigma. Fast ship to CA!"
– Mike R., Lab Director, California Water Labs

"GMP certs and COA exceeded expectations. Bulk order arrived in 9 days – game changer."
– Dr. Elena T., Pharma QC, New York

"Custom OEM packaging perfect for our SaaS lab kits. Reliability 10/10."
– Tom B., Operations Mgr, Texas Research Inst.

"From quote to delivery: seamless. Purity beat our old supplier by far."
– Lisa K., Supply Chain, Florida Biotech