In this modern developed society new inventions have become very common. Most of the new products are based on some chemical formula. This chemical formula is the key for each product and every concern maintains this secured. But due to modernization of communication, communicating these details directly or indirectly becomes unavoidable. But the threats any user faces is growing exponentially. So secured communication of these chemical formulas is an important problem. In this article we provide a method encrypting any chemical formula using graph domination as the tool for encryption. Here every chemical formula is converted into a binary string using graph domination and later encrypted using DNA steganography.