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Nagendra Kumar
Dr. Pramod Kumar Awasthi
Keywords:
Decoloration, transparent soda-lime silicate float glass, colorants, reducing agent, CIE L*a*b* system.
Abstract:
High-iron soda-lime silicate glass exhibits characteristic greenish-yellow coloration arising from the Fe2+/Fe3+ redox equilibrium. Decoloration aims to increase visible transmittance, improve aesthetic neutrality, and reduce solar heat gain. High-iron soda-lime silicate glass contains up to 0.09-0.15 wt% Fe2O3, resulting in strong absorption in the blue and near-infrared regions. The color arises from the coexistence of Fe2+ (strong NIR absorber) and Fe3+ (strong visible light absorber). Decoloration strategies include redox modification, chemical additives, oxidizing agents, or refining conditions.
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International Journal of Recent Research and Review
ISSN: 2277-8322
Vol. XVIII, Issue 4
December 2025
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PUBLISHED
December 2025
ISSUE
Vol. XVIII, Issue 4
SECTION
Articles
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