APEX LABS | LABORATORY CHEMICALS & INDICATORS
PHENOLPHTHALEIN INDICATOR (PH 8.2 – 10.0) 25 GMS – OXFORD LAB FINE CHEM
High-sensitivity pH indicator powder exhibiting a sharp colorless to red-violet transition for acid-base titrations.
Code: P-06728
25 Grams Pack
Oxford Lab Fine Chem
Product at a Glance
Phenolphthalein Indicator (pH 8.2 – 10.0) 25 gms manufactured by Oxford Lab Fine Chem LLP (Product Code: P-06728) is a benchmark laboratory pH indicator powder designed for volumetric acid-base titrations and chemical testing. It exhibits a crisp visual shift from colorless in acidic media to distinct red-violet in alkaline conditions. Supplied by Apex Labs with complete commercial GST tax invoices and Government e-Marketplace (GeM) portal support.
Note: Images for illustration purposes only. Actual bottle shape, cap color, or label design may vary based on manufacturer batches.
Product Overview: Phenolphthalein Indicator Powder
Phenolphthalein ($\text{C}_{20}\text{H}_{14}\text{O}_4$) is one of the most widely recognized organic indicators used in analytical chemistry. Product Code P-06728 from Oxford Lab Fine Chem LLP is specially refined to offer high colorimetric sensitivity and sharp endpoint detection during neutralization titrations involving strong acids and strong bases.
When dissolved in alcohol for indicator solution preparation, it provides rapid, unambiguous visual feedback at its working range of pH 8.2 (colorless) to pH 10.0 (red-violet/pink), making it indispensable for educational laboratories, quality control units, and industrial testing facilities.
Explore our comprehensive range of pH indicators, volumetric solutions, and fine chemicals in our laboratory chemicals catalog.
Key Specifications
PH TRANSITION RANGE
8.2 – 10.0
PRODUCT CODE
P-06728
COLOR CHANGE
Colorless to Red Violet
PACK WEIGHT
25 Grams
Technical Specifications
| Specification Parameter | Technical Benchmark |
|---|---|
| Chemical Product Name | Phenolphthalein Indicator |
| Manufacturer Product Code | P-06728 |
| CAS Registration Number | 77-09-8 |
| pH Visual Transition Range | pH 8.2 to 10.0 |
| Color Change Profile | Colorless (Acidic) to Red-Violet / Pink (Alkaline) |
| Packaging Size | 25 Grams Container |
| Physical Appearance | White to off-white microcrystalline powder |
| Solubility Profile | Soluble in Ethanol / Alcohol; Practically insoluble in Water |
| Manufacturer | Oxford Lab Fine Chem LLP |
| Authorized Supplier | Apex Labs (Varanasi, UP, India) |
Key Product Features
Sharp Endpoint Transition
Provides a distinct, unambiguous color change right at the neutralization point for high-precision titrations.
Indicator Grade Purity
Refined to eliminate organic impurities that might distort visual endpoint sensitivity on your Phenolphthalein Indicator 25g.
High Solubility in Ethanol
Dissolves rapidly in 95% ethanol or isopropyl alcohol to yield stable, long-lasting working indicator solutions.
Trusted Brand Manufacturer
Produced by Oxford Lab Fine Chem LLP under controlled quality standards for consistent analytical performance.
Primary Sector Applications
- Acid-Base Titrations: Standard visual indicator for titrating weak acids against strong bases in analytical chemistry labs.
- Industrial Quality Control: Testing free alkalinity, saponification values, and acid values in soaps, oils, and chemical manufacturing.
- Educational Chemistry Practicals: Fundamental reagent used across school, college, and university laboratories for acid-base experiments.
- Concrete Carbonation Testing: Field diagnostic indicator to assess carbonation depth and alkalinity loss in structural concrete.
B2B • INSTITUTIONAL • BULK PROCUREMENT
Bulk Procurement & GeM Supply Lines
Apex Labs supplies genuine laboratory indicators and reagents from Oxford Lab Fine Chem LLP with full commercial GST tax invoices for seamless Input Tax Credit (ITC) reconciliation.
We support universities, CSIR institutes, testing laboratories, and industrial R&D units via direct bulk supply or official tender fulfillment on the Government e-Marketplace (GeM) portal.
Product Specification & Direct Ordering
P-06728 Phenolphthalein Indicator 25g Oxford Lab Fine Chem: Indicator powder for acid-base titrations with pH 8.2 (colorless) to 10.0 (red-violet) transition.
- Laboratory Chemicals Catalog – explore pH indicators, volumetric reagents, and fine chemicals.
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Frequently Asked Questions
1. How is a working phenolphthalein indicator solution prepared?
A standard 1% working solution is prepared by dissolving 1.0 g of phenolphthalein powder in 100 mL of 95% ethanol (or a 50:50 ethanol/water mixture).
2. What is the exact pH transition and color change of phenolphthalein?
It is colorless in solutions below pH 8.2 and turns pink to red-violet in solutions above pH 10.0.
3. Can academic institutions and testing labs purchase this via GeM with GST invoices?
Yes, Apex Labs supplies all Oxford Lab Fine Chem products with itemized GST tax invoices for ITC compliance and supports direct bidding and institutional supply through the Government e-Marketplace (GeM) portal.
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