Red Iron Oxide — Pharma Grade Colour Supplier, Hyderabad
Product Overview
Red Iron Oxide (Fe₂O₃) is a synthetic inorganic pigment approved for pharmaceutical and cosmetic use. It is widely used in tablet film coatings, hard capsule colouring, and cosmetic formulations to impart red to red-brown shades. It is non-toxic, chemically stable, and compatible with most pharmaceutical coating systems including HPMC and Opadry.
Specifications
| CAS Number | 1309-37-1 |
| Molecular Formula | Fe₂O₃ |
| Appearance | Red to red-brown powder |
| Iron Oxide Content | NLT 95.0% |
| Loss on Drying | NMT 1.0% |
| Grades | IP / BP / EP / USP |
| Packaging | 25 kg HDPE bags |
Applications
- Red pigment in pharmaceutical tablet film coatings
- Hard gelatin and HPMC capsule shell colouring
- Cosmetic foundation and rouge pigment
- Topical preparation colourant
- Confectionery and food-safe colouring
- Ceramic and industrial pigment
Why Source from Surravi Phharma?
- Ready stock maintained in our centralised AC warehouse, Hyderabad
- IP / BP / EP / USP grades available
- Complete documentation: COA, MSDS, Regulatory certifications
- Flexible quantities — lab scale to bulk commercial
- Prompt delivery with pan India logistics support
Frequently Asked Questions
Where can I buy Red Iron Oxide pharma grade in Hyderabad?
Surravi Phharma supplies Red Iron Oxide (Fe₂O₃) in IP, BP, EP, and USP grades in Hyderabad. Used in tablet film coatings and hard capsule colouring. Ready stock. Call +91 8008002576 for pricing and COA.
Is Red Iron Oxide safe for use in oral pharmaceutical products?
Yes. Pharmaceutical grade iron oxides (red, yellow, black) are listed in the IP, BP, EP, and USP as approved colourants for oral dosage forms. They are non-toxic, non-reactive, and stable across the pH range encountered in the gastrointestinal tract. They are not absorbed systemically.
Can Red Iron Oxide be used in capsule shell colouring?
Yes. Red Iron Oxide is widely used to colour both gelatin and HPMC capsule shells. It is dispersed in the capsule dipping solution at 0.1–1.0% concentration along with Titanium Dioxide to produce opaque red or brown capsule shells.
What shades can be achieved with Red Iron Oxide?
Red Iron Oxide alone gives brick-red to red-brown shades. When blended with Yellow Iron Oxide, warm orange and brown tones are produced. Blended with Titanium Dioxide, pastel pinks and peaches result. Combined with Black Iron Oxide, dark brown and maroon shades are achieved.
Is Red Iron Oxide stable during tablet film coating?
Yes. Iron oxides are among the most stable pharmaceutical colourants. They are non-bleeding, thermally stable up to 300°C, resistant to light, and chemically inert under the mild alkaline conditions of standard aqueous and organic coating processes.