水氯镁石

Description

Bischofite · CAS 56491-84-0 · Cl2Mg. UNII 59XN63C8VM. Boiling Point: 1,412 °C; Boiling Point: 1412 °C; Boiling Point: 1412 °C @760 [mm Hg].

Identification

CAS Registry Number	56491-84-0
PubChem CID	5360315
Molecular formula	Cl2Mg
IUPAC name	magnesium dichloride
UNII (FDA)	59XN63C8VM

Computed Descriptors

Molecular Weight	95.21
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	93.9227471
Monoisotopic Mass	93.9227471
Topological Polar Surface Area	0
Heavy Atom Count	3
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	1,412 °C
Boiling Point	1412 °C
Boiling Point	1412 °C @760 [mm Hg]
Melting Point	712 °C (rapid heating)
Melting Point	714 °C
Solubility	In water, 54.6 g/100 g @ 20 °C
Density	2.32
Density	2.3 g/cm³
Density	2.325 @25 °C

Physical description & handling notes

• Wet Solid; Other Solid; Dry Powder; CBI; Large Crystals; Dry Powder; Other Solid; Liquid
• Colourless, odourless, very deliquescent flakes or crystals
• White to gray deliquescent solid; heat evolved when dissolves in water; [Sax]
• DELIQUESCENT WHITE SOLID IN VARIOUS FORMS.
• Thin white to gray granules and/or flakes
• LUSTROUS HEXAGONAL CRYSTALS

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: COLOR OR COLORING ADJUNCT, FIRMING AGENT, FLAVORING AGENT OR ADJUVANT, NUTRIENT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS COLOUR_RETENTION_AGENT; FIRMING_AGENT: Food Additives COLOR OR COLORING ADJUNCT, FIRMING AGENT, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT NOT LIMITED
GHS notification summary	60.6% (969 / 1600)

GHS Hazard Classification

GHS notification summary	60.6% (969 / 1600)
Reported hazard statements	H290 (27.6%), H302 (27.6%), H315 (37.6%), H318 (27.6%), H319 (11.8%), H335 (10.9%)

Documented Uses

• The compound is used in medicine as a source of magnesium ions, which are essential for many cellular activities. It has also been used as a cathartic and in alloys. [ChemIDplus] Occurs naturally in salt lakes and brines, and sea salt contains 17% MgCl2 by weight; [Ullmann]
• Source of magnesium metal, disinfectants, fire extinguishers, fireproofing wood, magnesium oxychloride cement, refrigerating brines, ceramics, cooling drill tools, textiles (size, dressing and filling of cotton and woolen fabrics, thread lubricant, carbonization of wool), paper manufacture, road dust-laying compounds, floor-sweeping compounds, flocculating agent, catalyst.
• AS ADDITION TO CASEIN GLUE; IN DISINFECTANTS; FLOOR-SWEEPING CMPDS; CATHARTIC
• Magnesium chloride is a component of fire extinguishers, ceramics, textile and paper manufacture.
• EPA Safer Chemical Functional Use Classes -> Processing Aids and Additives
• Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern

Synonyms

MAGNESIUM CHLORIDE; 7786-30-3; Magnesium chloride anhydrous; Magnesium dichloride; MgCl2; Anhydrous magnesium chloride; DTXSID5034690; NSC-529832; 59XN63C8VM; CHEBI:6636; Chloride, Magnesium; Fibro Flex; Cramp-Z; GZE Magnesium Oil; RefChem:6461; DTXCID3014690

Frequently Asked Questions

What are the CAS number and molecular formula of Bischofite?

CAS 56491-84-0; molecular formula Cl2Mg; molecular weight — g/mol.

What other names is Bischofite known by?

MAGNESIUM CHLORIDE, 7786-30-3, Magnesium chloride anhydrous, Magnesium dichloride, MgCl2, Anhydrous magnesium chloride.

What is the regulatory status of Bischofite?

Documented regulatory listings: FDA Substance added to food: COLOR OR COLORING ADJUNCT, FIRMING AGENT, FLAVORING AGENT OR ADJUVANT, NUTRIENT ; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS.

Is Bischofite classified as hazardous?

60.6% of GHS notifications report no hazard classification (969 of 1600).

What are the key physical properties of Bischofite?

Boiling Point: 1,412 °C; Boiling Point: 1412 °C; Boiling Point: 1412 °C @760 [mm Hg]; Melting Point: 712 °C (rapid heating).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.