| Identification | More | [Name]
Ferrous chloride | [CAS]
7758-94-3 | [Synonyms]
FECL2
FERROUS CHLORIDE
IRON ATOMIC SPECTROSCOPY STANDARD
IRON CHLORIDE
IRON(II) CHLORIDE
Ferro 66
ferro66
Ferrofloc
ferrouschloride,solid
ferrouschloride,solution
ferrousdichloride
Iron chloride (FeCl2)
Iron protochloride
iron(2+)chloride
Iron(ii) chloride (1:2)
iron(ii)chloride(1:2)
ironchloride(fecl2)
irondichloride
ironprotochloride
NA 1759 | [EINECS(EC#)]
231-843-4 | [Molecular Formula]
Cl2Fe | [MDL Number]
MFCD00011004 | [Molecular Weight]
126.75 | [MOL File]
7758-94-3.mol |
| Chemical Properties | Back Directory | [Appearance]
Greenish-white crystals.
readily oxidized. Soluble in alcohol and water. | [Melting point ]
677 °C (lit.) | [Boiling point ]
1023°C | [density ]
3.16 g/mL at 25 °C(lit.)
| [vapor pressure ]
0Pa at 20℃ | [Fp ]
1023°C | [solubility ]
H2O: soluble
| [form ]
beads
| [color ]
Off-white | [Specific Gravity]
3.162 | [Water Solubility ]
Soluble in water, alcohol and acetone. Slightly soluble in benzene. Insoluble in ether. | [Sensitive ]
Hygroscopic | [Merck ]
14,4043 | [Exposure limits]
ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3 | [InChIKey]
NMCUIPGRVMDVDB-UHFFFAOYSA-L | [CAS DataBase Reference]
7758-94-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Iron dichloride(7758-94-3) | [EPA Substance Registry System]
7758-94-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R22:Harmful if swallowed.
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 3260 8/PG 3
| [WGK Germany ]
1
| [RTECS ]
NO5400000
| [F ]
3-10-23 | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
2827392000 | [Safety Profile]
Poison by ingestion and
intraperitoneal routes. Mutation data
reported. Corrosive. Probably an irritant to
the eyes, skin, and mucous membranes. Can
react violently with ethylene oxide, K, Na.
di%en heated to decomposition it emits
toxic fumes of Cl-. See also CHLORIDES
and IRON. | [Hazardous Substances Data]
7758-94-3(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
Ferrous chloride is a greenish white crystalline solid. FERROUS CHLORIDE, SOLID(7758-94-3) is soluble in water. FERROUS CHLORIDE, SOLID(7758-94-3) is noncombustible. FERROUS CHLORIDE, SOLID(7758-94-3) is used in sewage treatment, in dyeing of fabrics, and for many other uses. | [Reactivity Profile]
Alkali metal hydroxides, acids, anhydrous chlorides of iron, tin, and aluminum, pure oxides of iron and aluminum, and metallic potassium are some of the catalysts that may cause ethylene oxide to rearrange and polymerize, liberating heat, [J. Soc. Chem. Ind. 68:179(1949)]. Explosions occur , although infrequently, from the combination of ethylene oxide and alcohols or mercaptans, [Chem. Eng. News 20:1318(1942)]. | [Air & Water Reactions]
Water soluble. | [Health Hazard]
Inhalation of dust irritates nose and throat. Ingestion causes irritation of mouth and stomach. Dust irritates eyes and may cause skin irritation on prolonged contact. | [Potential Exposure]
It is used in textile dyeing, metallurgy,
the pharmaceutical industry and sewage treatment. | [Fire Hazard]
Special Hazards of Combustion Products: Irritating hydrogen chloride fumes may form in fire. | [First aid]
Move victim to fresh air. Call 911 or emergency
medical service. Give artificial respiration if victim is not
breathing. Do not use mouth-to-mouth method if victim
ingested or inhaled the substance; give artificial respira tion with the aid of a pocket mask equipped with a one-way
valve or other proper respiratory medical device.
Administer oxygen if breathing is difficult. Remove and
isolate contaminated clothing and shoes. In case of contact
with substance, immediately flush skin or eyes with run ning water for at least 20 minutes. For minor skin contact,
avoid spreading material on unaffected skin. Keep victim
warm and quiet. Effects of exposure (inhalation, ingestion
or skin contact) to substance may be delayed. Ensure that
medical personnel are aware of the material(s) involved
and take precautions to protect themselves.
| [Shipping]
UN1759 Ferrous chloride, solid, Hazard class: 8;
Labels: 8-Corrosive material. UN1760 Ferrous chloride,
solution, Hazard class: 8; Labels: 8-Corrosive material. | [Incompatibilities]
Solution attacks metals. Contact with
ethylene oxide may initiate polymerization. Contact with
potassium or sodium forms an impact-sensitive material. | [Description]
Ferrous chloride is a pale greenish salt-likecrystal or power. Molecular weight = 126.75; Specific gravity (H2O:1) = 1.93 at 20 C; Boiling point=1012 C;Freezing/Melting point = 675.8 C. Hazard Identification(based on NFPA-704 M Rating System): Health 3,Flammability 0, Reactivity 1. Soluble in water. | [Chemical Properties]
Ferrous chloride is a pale greenish salt-like
crystal or power. | [Chemical Properties]
Greenish-white crystals.
readily oxidized. Soluble in alcohol and water. | [Uses]
A paramagnetic solid. | [Uses]
Ferrous chloride (FeCl2) is used in pharmaceutical preparations, for sewage treatment, and
as a mordant (which fixes dyes so that they will not run) in textiles. | [Uses]
Used in the synthesis of a novel cis-Fe(BPE5)2Cl2 (BPE5=1,2-diphospholanoethane) complex, which has potential application in many types of reactions such as intra- or intermolecular activation.1 | [Definition]
ChEBI: Iron dichloride is an iron coordination entity. | [Flammability and Explosibility]
Nonflammable | [storage]
Color Code—White: Corrosive or Contact Hazard;Store separately in a corrosion-resistant location. Prior toworking with this chemical you should be trained on itsproper handling and storage. Store in tightly closed containers in a cool, well-ventilated area away from potassium,sodium metals, or ethylene oxide. | [Purification Methods]
It forms white hygroscopic rhombohedral crystals with a green tint which oxidise in air to FeCl3 and Fe2O3. It is soluble in H2O, EtOH Me2CO but insoluble in Et2O. The tetrahydrate is pale green to pale blue in colour and loses 2H2O at 105-115o. The dihydrate loses H2O at 120o. [Anhydrous FeBr2 can be obtained by carefully dehydrating the tetrahydrate in a stream of HBr and N2, and it can be sublimed under N2.] The ferrous iron in aqueous solutions of these salts readily oxidises to ferric iron. (See above.) [Kovacuumic & Brace Inorg Synth VI 172 1960, Lux in Handbook of Preparative Inorganic Chemistry (Ed Brauer) Academic Press Vol II p 1491 1965.] |
| Questions And Answer | Back Directory | [Occurrence and Uses]
Iron(II) chloride occurs in nature as the mineral lawrencite. Iron dichloride is used as a mordant for dyeing; and as a reducing agent. It also is used in pharmaceutical preparation; in sewage treatment; and in metallurgy.
| [Physical Properties]
White hexagonal crystal; hygroscopic; density 3.16g/cm3; melts at 677°C; vaporizes at 1,023°C; vapor pressure 20 torr at 737°C and 200 torr at 897°C; highly soluble in water, ethanol and acetone; slightly soluble in benzene. The dihydrate and tetrahydrate are greenish monoclinic crystals; densities 2.39 and 1.39 g/cm3, respectively; decomposing at 120 and 105°C, respectively; both the hydrates soluble in water.
| [Preparation]
Iron(II) chloride is prepared by passing chlorine or hydrogen chloride gas over iron at red heat or 700°C:
Fe + 2HCl → FeCl2 + H2
Fe + Cl2 → FeCl2
It also may be produced by the reduction of iron(III) chloride with hydrogen or other reducing agents at elevated temperatures:
2FeCl3 + H2 → 2FeCl2 + 2HCl
The tetrahydrate is obtained by dissolving the metal in hydrochloric acid followed by crystallization at room temperature.
Fe + 2HCl + 4H2O → FeCl2•4H2O + H2
The tetrahydrate gradually loses water when heated above 105°C forming dihydrate, monohydrate and the anhydrous salt. At 220°C it loses all its water of crystallization.
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