It is usually encountered as the tetrahydrate, but monohydrate, NaBO 3 �H 2 O and trihydrates are well known NaBO 3 ?H 2 O and The monohydrate and tetrahydrate are the commercially important forms.
22.
Indium ammonium alum NH 4 In ( SO 4 ) 2 " 12H 2 O is fairly unstable at room temperature and must be crystallised below 5 �C . It decomposes at 36 �C to a tetrahydrate.
23.
The tetrahydrate is the most common form of " manganese ( II ) chloride " and is represented by the formula MnCl 2 ?H 2 O, but the anhydrous form and dihydrate MnCl 2 ?H 2 O are also known.
24.
Large coordination numbers are the rule : thorium nitrate pentahydrate was the first known example of coordination number 11, the oxalate tetrahydrate has coordination number 10, and the anion in the calcium and magnesium salts is 12-coordinate.
25.
According to Dow Chemical, the product that leaked aboard the American Airlines plane, sodium o-phenylphenate tetrahydrate and sodium hydroxide, may cause severe eye irritation and can injure the cornea, with the possibility of permanent impairment of vision or blindness.
26.
There are nine hydrates known, but three of them were confirmed to be tetrahydrate ( H 2 SO 4 ?H 2 O ), hemihexahydrate ( H 2 SO 4 �H 2 O ) and octahydrate ( H 2 SO 4 ?H 2 O ).
27.
It is commonly found as the tetrahydrate Co ( C 2 H 3 O 2 ) 2 ? H 2 O or Co ( CH 3 COO ) 2 ? H 2 O also abbreviated Co ( OAc ) 2 ? H 2 O . It is used as an industrial catalyst.
28.
"' Potassium sodium tartrate tetrahydrate "', also known as "'Rochelle salt "', is a double salt of tartaric acid first prepared ( in about 1675 ) by an gramophone ( phono ) pick-ups, microphones and earpieces during the post-World War II consumer electronics boom of the mid-20th Century.
29.
There are a number of forms reported : an anhydrous form, a dihydrate, Ca 2 P 2 O 7 ?H 2 O and a tetrahydrate, Ca 2 P 2 O 7 ?H 2 O . Deposition of dihydrate crystals in cartilage are responsible for the severe joint pain in cases of calcium pyrophosphate deposition disease ( pseudo gout ) whose symptoms are similar to those of gout.
30.
"' Nickel ( II ) acetate "'is the name for chemical compound with the formula Ni ( CH 3 CO 2 ) 2 ? H 2 O or Ni ( CH 3 COO ) 2 ? H 2 O also abbreviated Ni ( OAc ) 2 ? H 2 O . The green tetrahydrate Ni ( CH 3 COO ) 2 ? H 2 O is more common.
