Aluminum sodium sulfate

  • Aluminum sodium bis(sulfate)
  • Sodium aluminum sulfate
  • Soda alum
  • Sodium alum
  • Sodium aluminum sulfate
Formula
NaAl(SO4)2
Structure
Description
A colorless crystalline solid.
Uses
Textiles (mordant, waterproofing), dry colors, ceramics, tanning, paper size precipitant, matches, inks, sugar refining, water purification, confectionery, baking powder, food additive, engraving.

Registry Numbers and Inventories.
CAS
10102-71-3
EC (EINECS/ELINCS)
233-277-3
Merck
12,378
Beilstein/Gmelin
10149 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
AlH24NaO20S2
Formula mass
242.1
Melting point, °C
61
Density
1.675 g/cm3 (20 C)
Solubility in water
110 g anhydrous salt/100 cc of @ 15 C
Thermal expansion
1.5E-05/K

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
No data.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)

Health.
Exposure limit(s)
OSHA: PEL (8 h TWA): 15 mg/m3.
Exposure effects
Aluminum accumulates in brain tissue and is a neurotoxic agent. Ataxia and seizures have been reported following ingestions and in patients with compromised renal function receiving bladder irrigations. Mental status changes, including obtundation, lethargy and confusion, may occur.
   Ingestion
Ingestions of small amounts of alum may cause dryness and a puckering sensation of mucous membranes in the mouth and throat. Rectal enemas containing 1% ammonium alum caused mild cramping and nausea in the majority of patients.
   Inhalation
Inhalation is irritating and may cause airway congestion. Symptoms are usually transient. Respiratory depression has been reported in patients with severe aluminum encephalopathy.
   Skin
Concentrated solutions may irritate abraded skin.

First aid
 
   Ingestion
Dilution: immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 4 ounces/120 ml in a child). Do not induce vomiting.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
Std. Transport #
4963306