Calcium sulfate dihydrate Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Chemische Eigenschaften
monoclinic; hardness 1.5–2.0 Mohs; lumps or white powder(s); used in manufacturing portland cement, plaster of paris and artificial marble [KIR78] [MER06] [STR93]
Verwenden
Calcium Sulfate Dihydrate is obtained from gypsum, a naturally occurring compound. Also used in the preparation of calcium sulfate and calcium sulfoaluminate.
Definition
A mineral that consists of calcium sulfate with water molecules attached, or the rock that consists primarily of this mineral.
Hazard
Nasal symptoms.
Landwirtschaftliche Anwendung
Selenite, which is a salt of selenic acid (H
2SeO
3), and
very similar to sulphite, is made by the oxidation of
selenium by nitric acid. The low solubility of ironselenite
complexes is responsible for the non-toxic level
of selenium in plants growing on acid soils having a very
high total selenium content. Plants absorb selenite, but
generally to a lesser extent, than selenate, which is
another form of selenium.
Sicherheitsprofil
Human systemic effects
by inhalation: fibrosing alveolitis ('growth of
fibrous tissue in the lung), unspecified
respiratory system effects, and unspecified
effects on the nose. Questionable
carcinogen with experimental carcinogenic
data. Long considered a nuisance dust
(dependmg on silica content). When heated
to decomposition it emits toxic fumes of
SO,. See also CALCIUM SULFATE,
CALCIUM COMPOUNDS, and
SULFATES.
l?uterung methode
It loses only part of its H2O at 100-150o (see below). It is soluble in H2O and very slowly soluble in glycerol. It is insoluble in most organic solvents.
Calcium sulfate dihydrate Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
