Tata Chemicals has reported a 158% rise in net profit to Rs 34 crore in the first quarter of the current fiscal, from Rs 13 crore in the year-ago period. Net sales rose to Rs 362.2 crore from Rs 291 crore, an increase of 24%. Operating profits rose to Rs 109 crore from Rs 81 crore while profit before tax rose to Rs 53 crore from Rs 17 crore. Other income rose to Rs 7.6 crore from Rs 3.7 crore.