> Co to jest "White Spirit", czyt to samo co zwykły Spirit, czy
techniczny?

Properties of white spirit
White spirit is a clear colourless solvent with very low water solubility
and a characteristic odour (odour threshold: 0.5-5 mg/m3). The most common
variety of white spirit is a mixture of saturated aliphatic and alicyclic
C7-C12 hydrocarbons with a content of 15-20% (by weight) of aromatic
C7-C12 hydrocarbons and a boiling range of 130-230 °C. The C9-C11
hydrocarbons (aliphatics, alicyclics and aromatics) are most abundant,
constituting 80% (by weight) of the total. This ordinary white spirit is
designated white spirit, type 1, regular grade, as three different types
and three different grades exist. The type refers to whether the solvent
has been subjected to hydrodesulfurization (removal of sulfur) alone (type
1), solvent extraction (type 2) or hydrogenation (type 3). The
hydrodesulfurized type contains less than 25% aromatic hydrocarbons, the
solvent-extracted less than 5%, and the hydrogenated less than 1%. Each
type comprises three different grades: low flash grade (flash point: 21-30
°C; initial boiling point: 130-144 °C), regular grade (flash point: 31-54
°C; initial boiling point: 145-174 °C), and high flash grade (flash
point: 55 °C; initial boiling point: 175-200 °C). The grade is determined
by the crude oil used as the starting material and the conditions of
distillation. Type 0 white spirit is defined as a distillation fraction
with no further treatment, consisting predominantly of saturated C9-C12
hydrocarbons with a boiling range of 140-220 °C. The low flash grade
possesses the highest vapour pressure of approximately 1.4 kPa (10.5 mmHg)
at 20 °C.

A USA variety of type 1 is called Stoddard solvent and is a petroleum
distillate defined according to its boiling range of 149-204 °C and the
absence of rancid or objectionable odours.
--
Pozdr. Jerzy Nowak
Wawa
"Don't be fooled. If something sounds too good to be true, it probably
is."