## Cryolite

**Formula**
 
$Na3(AlF6)$

**Synonyms**
 
Sodium Aluminum Fluoride, Sodium fluoaluminate

**Description**
 
Used as a non-hygroscopic yellow colouring agent in some star compositions.

**Sources** 

Pyrotechnic supplies, such as skylighter.

**Hazards**

T, N

_Acute_: Poison by ingestion. Large doses of overexposure cause severe nausea, vomiting, diarrhea, abdominal burning and cramp-like pains. Contact with skin and eyes may cause irritation. Inhalation can cause irritation to mucous membranes and respiratory tracts. 

_Chronic_: May cause fluorosis, which is a condition affecting the bones and teeth.
