Ferric sulfate Property

Melting point:

480°C

Boiling point:

101-118 °C

Density 

3.097

vapor pressure 

0Pa at 20℃

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

slightly soluble in ethanol; insoluble in acetone

form 

Powder

color 

Yellow-gray

Water Solubility 

Soluble in water. Sparingly soluble in alcohol. Almost insoluble in acetone and ethyl acetate. Insoluble in sulfuric acid and ammonia.

Sensitive 

Hygroscopic

Merck 

14,4032

Exposure limits

ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3

LogP

-1.031 (est)

CAS DataBase Reference

10028-22-5(CAS DataBase Reference)

NIST Chemistry Reference

Ferric sulfate(10028-22-5)

EPA Substance Registry System

Ferric sulfate (10028-22-5)

Safety

Hazard Codes 

Xn

Risk Statements 

22-36/37

Safety Statements 

26

RIDADR 

UN 9121

WGK Germany 

3

RTECS 

NO8520000

TSCA 

Yes

HS Code 

2833298080

Hazardous Substances Data

10028-22-5(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

Ferric sulfate Chemical Properties,Usage,Production

Description

Ferric sulfate (iron sulfate) is the ferric salt of sulfate. It can be used as a mordant in dyeing and used as a coagulant for the treatment of industrial wastes. In the medical field, it can be used as an astringent and styptic. It is a kind of hemostatic agent being capable of controlling or stopping the flow of blood. It is also recommended that ferric sulfate is a good pulpotomy agent in primary teeth with good potential of substituting the formocresol. It can also be used in pigment, and in pickling baths for aluminum and steel. It is generally prepared through the reaction between ferrous sulfate, sulfuric acid and an oxidizing agent such as nitric acid.

References

Zouboulis, A. I., P. A. Moussas, and F. Vasilakou. "Polyferric sulphate: preparation, characterisation and application in coagulation experiments."Journal of Hazardous Materials 155.3 (2008):459. Zhang, Nianrong, D. Du, and Q. Wang. "Mordant Dyeing Behavior of Tanning Extracts on Leather Dyeing." China Leather (2012). Rodríguez-Priego, M. E., et al. "Ferric sulphate alterations on primary dentin and the adhesive interface. " Journal of Adhesive Dentistry16.4(2014):347-356.
Dan, E. Fischer. "Ferric sulfate as hemostatic agent." US, US 4551100 A. 1985.
Lee, Sang Heon, M. N. Lee, and S. H. Lee. "PRIMANY TOOTH PULPOTOMY USING FERRIC SULFATE." Journal of the Korean Academy of Pedtatric Dentistry 25.4(1998):843-848.

Description

§184.1307(a) Ferric sulfate (iron(HI)sulfate, Fe2(S04)3), a yellow substance that may be prepared by oxidizing iron(II)sulfate or by treating ferric oxide or ferric hydroxide with sulfuric acid.

Chemical Properties

Yellow crystals or grayish-white powder.(1) slightly soluble in water, (2) very soluble in water. Keep well closed and protected from light. Noncombustible.

Chemical Properties

Ferric Sulfate is a grayish-white powder or yellow lumpy crystals.

Physical properties

The anhydrous salt constitutes grayish-white rhombic crystals; hygroscopic; density 3.10 g/cm³; slightly soluble in cold water; decomposes in hot water. The nonahydrate is a yellow hexagonal crystalline substance; refractive index 1.54; density 2.10 g/cm³; hardness 2.5 Mohs; decomposes at 400°C; very soluble in water.

Uses

Iron(III) Sulfate can be used for water treatment system.

Uses

Ferric Sulfate is a nutrient and dietary supplement that is a source of iron.

Uses

In preparation of iron alums, other iron salts and pigments; as coagulant in water purification and sewage treatment; in etching aluminum; in pickling stainless steel and copper; as mordant in textile dyeing and calico printing; in soil conditioners; as polymerization catalyst.

Definition

Ferrous sulfate,also known as ferrisulpas, green copperas, green vitriol, iron sulfate, and melanterite, is composed of blue green monoclinic crystals. It is soluble in water and is used as a mordant for dyeing wool in the textile industry. Ferrous sulfate is also used as a disinfectant and in the manufacture of ink.

Preparation

Iron(III) sulfate may be prepared by oxidation of iron(II) sulfate by hydrogen peroxide, nitric acid or any other suitable oxidizing agent. The reaction is carried out in sulfuric acid. Balanced molecular equations for the reactions with hydrogen peroxide and nitric acid are as follows:
2FeSO₄ + H₂SO₄ + H₂O₂ → Fe₂(SO₄)₃ + 2H₂O
6FeSO₄ + 3H₂SO₄ + 2HNO₃ → 3Fe₂(SO₄)₃ + 2NO + 4H₂O
Even in the absence of an oxidizing agent, concentrated sulfuric acid alone can1 convert iron(II) sulfate to iron(III) sulfate: 2FeSO₄ + 2H₂SO₄→ Fe₂(SO₄)₃ + SO₂ + 2H₂O It also may be prepared by treating iron(III) oxide with sulfuric acid:
Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O
.

General Description

A yellow crystalline solid or a grayish-white powder. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Ferric sulfate is used for water purification, and as a soil conditioner.

Air & Water Reactions

Soluble in water. Hygroscopic in air. Forms acidic aqueous solutions.

Reactivity Profile

Ferric sulfate is acidic. Corrosive to copper, copper alloys, mild steel, and galvanized steel [USCG, 1999].

Health Hazard

Inhalation of dust irritates nose and throat. Ingestion causes irritation of mouth and stomach. Dust irritates eyes and can irritate skin on prolonged contact.

Flammability and Explosibility

Non flammable

Agricultural Uses

Herbicide, Molluscicide, Agricultural product constituent: Ferric sulfate is used on forage alfalfa, almonds, nurseries and structural pest control. This material is also used in pigments, textile dyeing, water treatment, and metal pickling

Trade name

GREENMASTER AUTUMN®; MAXICROP MOSS KILLER®; VITAX MICRO GRAN®; VITAX TURF TONIC®

Safety Profile

A poison by intraperitoneal route. Mutation data reported. When heated to decomposition it emits toxic fumes of SOx and Fe-. See also SULFATES and other ferric salts.

Potential Exposure

This material is used in pigments, textile dyeing, water treatment; and metal pickling.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit. Thesymptoms of metal fume fever may be delayed for 4-12 hfollowing exposure: it may last less than 36 h.Note to physician: For severe poisoning do not use BAL[British Anti-Lewisite, dimercaprol, dithiopropanol(C3H8OS2)] as it is contraindicated or ineffective in poisoning from iron.

storage

Color Code—Green: General storage may be used.Prior to working with this chemical you should be trainedon its proper handling and storage. Store in tightly closedcontainers in a cool, well-ventilated area away from light,moisture, aluminum, magnesium, copper and its alloys,zinc, galvanized and mild steels.

Shipping

UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous haz ardous material, Technical Name Required.

Purification Methods

Dissolve the sulfate in the minimum volume of dilute aqueousH2SO4 and allow it to evaporate at room temperature until yellowish-white crystals start to form. Do not concentrate by boiling off the H2O as basic salts will be formed. Various hydrates are formed; the common ones are the dodeca and nona hydrates which are violet in colour. The anhydrous salt is colourless and is very hygroscopic, but it dissolves in H2O slowly unless ferrous sulfate is added. [Gmelin’s, Iron (8th edn) pp 439-462 1932.]

Incompatibilities

Hydrolyzed slowly in aqueous solution. Incompatible with magnesium, aluminum. Corrosive to copper and its alloys, mild and galvanized steel. Light sensitive.

Waste Disposal

Treat with soda ash or dilute NaOH. Separate any precipitate and landfill. Flush solution to sewer.