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Merck
CN

01713

Cryolite

≥97.0% (from F), powder, synthetic

Synonym(s):

Kryolith, Sodium hexafluoroaluminate

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About This Item

Linear Formula:
Na3AlF6
CAS Number:
15096-52-3
Molecular Weight:
209.94
UNSPSC Code:
12161600
PubChem Substance ID:
57646698
NACRES:
NA.22
MDL number:
MFCD00003507

Key Documents

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Product Name

Cryolite, synthetic, ≥97.0% (from F)

SMILES string

[Na+].[Na+].[Na+].F[Al-3](F)(F)(F)(F)F

InChI

1S/Al.6FH.3Na/h;6*1H;;;/q+3;;;;;;;3*+1/p-6

InChI key

REHXRBDMVPYGJX-UHFFFAOYSA-H

assay

≥97.0% (from F)

form

powder

quality

synthetic

reaction suitability

core: aluminum
reagent type: catalyst

impurities

≤0.5% silicic acid (as SiO2)

loss

≤0.5% loss on drying, 105 °C

cation traces

Fe: ≤500 mg/kg

storage temp.

2-30°C

Quality Level

100

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Application

Cryolite is commonly used as an electrolyte for aluminum electrolysis. Alumina is dissolved in molten cryolite is used to dissolve alumina during aluminium processing.

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Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - STOT RE 1

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN0248
BCCJ2923
BCCG1180
BCCD8438
BCCD1905

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Effects of airborne fluorides on workers at a cryolite production plant.
Y Baba et al.
Gaoxiong yi xue ke xue za zhi = The Kaohsiung journal of medical sciences, 1(4), 226-233 (1985-04-01)
Tone Sjåheim et al.
American journal of industrial medicine, 50(6), 443-448 (2007-05-12)
Aluminum potroom asthma (PA) has been described in several reports. This study aimed to investigate the association between blood eosinophils and PA. In a cross-sectional study, 338 workers were examined as follows: spirometry, blood eosinophils, skin prick test, and work
S V Kuz'min et al.
Meditsina truda i promyshlennaia ekologiia, (6)(6), 14-17 (2012-09-25)
Federal budgetary establishment of a science "the Ekaterinburg medical centre of science of preventive maintenance and health protection of workers industrial plants". Findings are that adaptation level and life quality parameters progressively decrease with longer length of service. The most
Extended follow-up of cancer incidence in fluoride-exposed workers.
Philippe Grandjean et al.
Journal of the National Cancer Institute, 96(10), 802-803 (2004-05-20)
T K Semennikova et al.
Gigiena truda i professional'nye zabolevaniia, (3)(3), 6-8 (1992-01-01)
Over 1000 workers of hydrofluoric and cryolite enterprises and electrolysis shops of aluminium enterprises were examined. Subjects exposed to soluble hydrofluorides presented in the early stage of chronic intoxication with a variety of syndromes, that was characteristic of intoxication with
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