1. Application
Potassium Hydrogen Phthalate (KHP) is widely used in laboratories for:
- Primary standard for acid-base titrations (high purity standard for NaOH standardization)
- Analytical chemistry applications
- pH calibration of buffers
- Laboratory reagent for quality control in pharmaceutical and chemical industries
- Educational and research laboratory experiments
2. Compliance Standard
- ISO 9001 certified manufacturing
- AR / ACS / Reagent grade
- Conforms to USP / BP / EP standards
- Laboratory-grade purity suitable for primary standard use
- GLP-compliant handling and packaging
3. Product Description
Potassium Hydrogen Phthalate is a white, crystalline, odorless powder with high purity. It is stable, non-hygroscopic under controlled storage, and widely used as a primary standard in acid-base titrations due to its high equivalent weight reproducibility.
- Chemical Formula: KHC8H4O4
- Molar Mass: 204.22 g/mol
4. Technical Specifications
|
Parameter |
Specification |
|
Material |
Potassium Hydrogen Phthalate (KHP) |
|
Appearance |
White crystalline powder |
|
Assay / Purity |
≥ 99.5% (AR / ACS grade) |
|
Moisture Content |
≤ 0.5% |
|
Solubility |
Soluble in water (14 g/100 mL at 25°C), practically insoluble in alcohol |
|
pH of 0.1% Solution |
~4.0–5.0 |
|
Storage |
Dry, cool place, away from moisture and CO2 |
|
Stability |
Stable under normal lab conditions |
5. Apparatus is Supplied
- Potassium Hydrogen Phthalate in HDPE bottles or glass containers
- Labeled with batch number, assay, and expiry
- Certificate of Analysis (CoA) provided
6. Optional Accessories
- Analytical balance (0.1 mg resolution)
- Glass beakers and flasks
- Burettes and pipettes for titration
- Storage desiccator
- pH meters for calibration
7. Common Capacities Available
- 50 g
- 100 g
- 250 g
- 500 g
- 1 kg
- 5 kg (bulk packs available)
8. Dimensions & Weight (Approx.)
|
Pack Size |
Approx. Container Dimensions |
Approx. Gross Weight |
|
50 g |
60 mm diameter × 100 mm height |
80 g |
|
100 g |
70 mm × 120 mm |
120 g |
|
250 g |
100 mm × 150 mm |
270 g |
|
500 g |
120 mm × 180 mm |
550 g |
|
1 kg |
150 mm × 200 mm |
1.1 kg |
|
5 kg |
250 mm × 300 mm |
5.5 kg |
9. Safety & Handling
- Non-toxic but avoid inhalation of dust
- Use gloves and safety goggles during handling
- Store in a dry, cool, and closed container
- Not classified as hazardous under normal laboratory conditions