DNases/RNases/Proteases: not detectable
Assay (titr.): min. 99 %
pH (1 M): 4.7 - 7.0
Water (K.F.): max. 1.0 %
Ammonium: max. 0.1 %
Fe: max. 0.0005 %
A (1 cm/6 M in water HPLC grade)
280 nm: max. 0.6
300 nm: max. 0.1

Guanidinium thiocyanate is a salt consisting of the guanidinium cations [CH6N3]+, which is the conjugate acid of guanidine, and thiocyanate anions. It is used in biochemistry mainly as a general protein denaturant, i.e., a chaotropic agent, although it is most commonly used for the extraction of DNA and RNA.