Ferrous sulfate heptahydrate

Bezeichnung:Ferrous sulfate heptahydrate

CAS-Nr7782-63-0

Englisch Name:Ferrous sulfate heptahydrate

CBNumberCB9232125

SummenformelFeH14O11S

Molgewicht278.01

MOL-Datei7782-63-0.mol

Ferrous sulfate heptahydrate physikalisch-chemischer Eigenschaften

Schmelzpunkt	64 °C
Dichte	1.898 g/mL at 25 °C (lit.)
Dampfdruck	14.6 mm Hg ( 25 °C)
storage temp.	Store at +15°C to +25°C.
Löslichkeit	25.6 g/100 mL (20°C)
Aggregatzustand	Solution
Farbe	Slightly greenish to blue
Wichte	1.898
PH	3.0-4.0 (25℃, 50mg/mL in H2O)
Geruch (Odor)	pale bluish-grn. cryst. or gran., odorless
Wasserlöslichkeit	25.6 g/100 mL (20 ºC)
Sensitive	Air Sensitive & Hygroscopic
Merck	14,4057
Expositionsgrenzwerte	ACGIH: TWA 1 mg/m3 NIOSH: TWA 1 mg/m3
Stabilität	Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive.
InChIKey	SURQXAFEQWPFPV-UHFFFAOYSA-L
LogP	-1.031 (est)
CAS Datenbank	7782-63-0(CAS DataBase Reference)
EPA chemische Informationen	Ferrous sulfate heptahydrate (7782-63-0)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-36/38
S-Sätze:	36/37/39-46
WGK Germany	1
RTECS-Nr.	NO8510000
F	10-23
TSCA	Yes
HS Code	28332950
Toxizität	LD50 in mice: 65 mg/kg i.v.; 1.52 g/kg orally (Hoppe)

Gefahreninformationscode (GHS)

Ferrous sulfate heptahydrate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
S-Sätze Betriebsanweisung:
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
§184.1315(a) Ferrous sulfate heptahydrate (iron (II) sulfate heptahydrate, FeS04-7H2O) is prepared by the action of sulfuric acid on iron. It occurs as pale, blueish-green crystals or granules. Progressive heating of ferrous sulfate heptahydrate produces ferrous sulfate (dried). Ferrous sulfate (dried) consists primarily of ferrous sulfate monohydrate (CAS No. 17375-41-6) with varying amounts of ferrous sulfate tetrahydrate (CAS No. 20908-72-9) and occurs as a grayish-white to buff-colored powder.
Chemische Eigenschaften
Ferrous sulfate is a greenish or yellowish solid in fine or lumpy crystals.
Chemische Eigenschaften
light blue or light blue-green solid
Verwenden
Iron(II) sulfate heptahydrate is used as a precursor to prepare other iron compounds such as a lawn conditioner and a mordant for wool dyeing. It is actively used in the manufacture of ink including iron gall ink. As a reducing agent, it participates in the reduction of chromate in cement. It is also used in industrial water treatment plants to remove phosphate. It is also used in the gold refining process to precipitate metallic gold. Woodworkers use aqueous solutions of ferrous sulfate to color maple wood a silvery hue. It finds application in the treatment of iron chlorosis, which arises due to deficiency of iron in horticulture.
Verwenden
Used in quantitative analysis of nitrates .
Verwenden
In manufacture of Fe, Fe Compounds, other sulfates; in Fe electroplating baths; in fertilizer; as food and feed supplement; in radiation dosimeters; as reducing agent in chemical processes; as wood preservative; as weed-killer; in prevention of chlorosis in plants; in other pesticides; in writing ink; in process engraving and lithography; as dye for leather; in etching aluminum; in water treatment; in qualitative analysis ("brown ring" test for nitrates); as polymerization catalyst.
Definition
ChEBI: A hydrate that is the heptahydrate form of iron(2+) sulfate. It is used as a source of iron in the treatment of iron-deficiency anaemia (generally in liquid-dosage treatments; for solid-dosage treatments, the monohydrate is normally used).
Allgemeine Beschreibung
A greenish or yellow-brown crystalline solid. Density 15.0 lb /gal. Melts at 64°C and loses the seven waters of hydration at 90°C. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used for water or sewage treatment, as a fertilizer ingredient.
Air & Water Reaktionen
Water soluble
Reaktivität anzeigen
Ferrous sulfate heptahydrate is a weak reducing agent.
Health Hazard
INGESTION: abdominal pain, retching, diarrhea, dehydration, shock, pallor, cyanosis, rapid or weak pulse, shallow respiration, low blood pressure.
Sicherheitsprofil
Poison by intravenous, intraperitoneal, and subcutaneous routes. Moderately toxic by ingestion and rectal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of SOx.
mögliche Exposition
It is used as a fertilizer, food or feed additive; and in herbicides; process engraving; dyeing, and water treatment. A byproduct of various chemical and metal treating operations.
läuterung methode
Crystallise the sulfate from 0.4M H2SO4, or precipitate it from an aqueous solution with EtOH. It is efflorescent in dry air, and is converted to the tetrahydrate at 57o, then to the monohydrate at 65o (or by heating the heptahydrate in a vacuum at 140o). It forms a brown-black complex, FeSO4.NO, with nitric oxide and is used in a qualitative test for nitrates (“brown ring” test).
Inkompatibilitäten
Aqueous solution is acidic. Contact with alkalies form iron. Keep away from alkalies, soluble carbo nates; gold and silver salts; lead acetate; lime water, potassium iodide; potassium and sodium tartrate; sodium borate; tannin.

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