Caustic soda prices rose by Rs 100 per 50 kg in the national capital today mostly supported by fall in supplies from producing belts amid firm demand from consuming industries. 

Caustic soda flake rose by Rs 100 to Rs 1,800-1,900 per 50 kg. 

Marketmen said apart from good demand from detergent manufacturers, tight supplies from producing belts pushed up caustic soda prices at the wholesale chemical market here. 

Following are today's quotations: 

Ammonium chloride (50 kg) Rs 2,000-3,000, Acetic acid (1kg) Rs 53-57, Ammonia bicarb (25 kg) Rs 550-700, Boric acid technical (50 kg) Rs 4,500-5,000, Borex granular (50 kg) Rs 2,200-2,500. 

Caustic soda flake (50 kg) Rs 1,800-1,900, Citric acid (50 kg) (China) Rs 3,400-3,600, Citric acid deshi (50 kg) Rs 3,800-4,000, Camphor slab (1 kg) Rs 365, Camphor powder (1kg) Rs 330, Glycerin (1 kg) Rs 140-160, Hexamine (1kg) Rs 94, Hydrogen peroxide (1 kg) Rs 35-50, menthol bold crystal (per kg) Rs 1,055, menthol flake (1 kg) Rs 1,045 and mentha oil (1kg) Rs 1,075.