Rasayani is located on SH-83, about five kilometres off NH4. Rasayani is composed of a cluster of villages namely Ambivali, Dapivali, Mohopada, Chambarli, Waveghar, Rees, kambe, Karade, Gulsunde, Turade, Sawle. Apparently, the name Rasayani was originally coined by the noted Marathi writer P.L.Deshpande. There are many chemical manufacturing and processing companies located here. The word "Rasayan - रसायनी" (in devnagri script) means Chemical and India's first Chemicals industry "Hindustan Organic Chemicals Ltd." was established here in 1960's, hence he decided to name the place "Rasayani". It derives its name mainly from chemical industry HOCL. As of today the biggest player remaining is Reliance, which has a petrochemicals and fibre plant in the area. The ancient river of Patalganga and small streams flow through the area. It is said that the Patalganga riven finds mention in ancient vedic texts and the temples in Turade-Karade area and its banks were considered holy places and a Dip in the river considered pious to mention the least. The annual fair during Maha Shiv-Ratri at Gulsunda is a survivor of this ancient tradition. The area is surrounded by Prabal School (HOCL Management Trainee Hostel), Irshala, Karnala (A small Housing For new/fresh Officers of HOCL) and other hills-mountains of Sahyadri ranges. Locations of Interest Raseshwar Temple: Ancient temple of Lord Shiva, Rasayani is named after Raseshwar. HOCL Guest house: HOCL guest house in Ambivali village is located near HOCL Hospital. Patalganga river Dam: Located next to Ganajan Maharaj Temple(in HOC Colony) Morbe Dam: One of the largest damns owned by NMMC (Navi Mumbai Municipal Corporation) Manikgad: Located near Vadgaon village. MIDC Hill: Located on the H.I.L. Industrial area Karnala Fort: this covers Rasayani from west side Apta Railway Station: A popular hotspot for Bollywood movies including Dilwale Dulhaniya Le Jayenge, Khaki. Chavane Dam: Located near Apta Railway Station. Usran Dam: Located near Devloli Village.