Ethyl Lactate. Ethyl Lactate is an environmentally benign solvent. Lactate esters have found industrial applications in specialty coatings, inks, cleaners and standard cleaning products. The solvent market is estimated at between 3.5 to 4.5 million tonnes per year, at prices ranging from US$ 2.00 to US$ 3.75 per kilo.io-solvents are progressively replacing petrochemical solvents and ethyl lactate serves as a biodegradable and non-toxic solvent which is sought after especially in the field of microelectronics and complies with the quality demands of the semiconductor industry.
Titanium is very expensive because it is awkward to extract from its ores-for example, from rutile, TiO2. You can't use carbon reduction Titanium can't be extracted by reducing the ore using carbon as a cheap reducing agent.t has a relatively low density (about 60% that of iron). It is also the tenth most commonly occurri â¦ ng element in the Earth's crust. That all means that titanium should be a really important metal for all sorts of engineering applications. In fact, it is very expensive and only used for rather specialised purposes.
It really depends on what metal you choose and how big (wide, thick) it is. The more metal used the more expensive it is. Platinum is going to cost the most. You can get a small, simple titanium ring at Walmart for less than $50. Higher quality titanium at a jewelry store will cost a few hundred dollars. A really big, thick platinum ring can actually cost a couple thousand dollars at a fine jewelry store. it depends on if it's white gold, silver, titanium, platinum, etc... my husbands ring is titanium and back when we bought it from JB Robinson in 2002, it was around $500.