Sodium sesquicarbonate

Description

Sodium sesquicarbonate · CAS 533-96-0 · C2HNa3O6. UNII Y1X815621J. Density: 2.112.

Identification

CAS Registry Number	533-96-0
PubChem CID	10791
Molecular formula	C2HNa3O6
IUPAC name	trisodium;hydrogen carbonate;carbonate
UNII (FDA)	Y1X815621J

Computed Descriptors

Molecular Weight	189.99
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	0
Exact Mass	189.94662059
Monoisotopic Mass	189.94662059
Topological Polar Surface Area	124
Heavy Atom Count	11
Formal Charge	0
Complexity	43.5

Physical & Chemical Properties

Density	2.112

Physical description & handling notes

• Liquid; Dry Powder; Other Solid
• White flakes, crystals or crystalline powder
• Found in nature as dihydrates: monocyclic needles that are stable in air and soluble in water; [Merck Index #8674] A glass-like, noncombustible solid that is white, yellow or gray; [Hawley]
• White crystals, flakes, or crystalline powder
• White, needle-shaped crystals
• Decomposes

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: PH CONTROL AGENT ACIDITY_REGULATOR: Food Additives NOT SPECIFIED Included in the group ADI for carbonates and bicarbonates TRS 669-JECFA 25/33 CIR / INCI: Cosmetic ingredients (Sodium Sesquicarbonate) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	6.8% (24 / 351)

GHS Hazard Classification

GHS notification summary	6.8% (24 / 351)
Reported hazard statements	H315 (11.1%), H319 (92.9%), H335 (10.8%)

Documented Uses

• CIR ingredient: Sodium Sesquicarbonate
• Used in bath salts, laundry detergents, water softeners, and buffers; Used to produce sodium carbonate and to tan leather; [HSDB]
• Leather Tanning and Processing [Category: Industry]
• Abundant salt in East African countries used in treatment of high- & low-tannin grain sorghums to reduce assayable tannins & improve nutritive value of grains; /sodium sesquicarbonate salt/
• Detergent and soap builder, mild alkaline agent for general cleaning and water softening, bath crystals, alkaline agent in leather tanning, food additive.
• For more Uses (Complete) data for SODIUM SESQUICARBONATE (10 total), please visit the HSDB record page.

Synonyms

SODIUM SESQUICARBONATE; Magadi soda; Snowflake crystals; 533-96-0; Urao; Trisodium hydrogendicarbonate; Sodium carbonate (3:2); Carbonic acid, sodium salt (2:3); SQ 810; SESQUI TM; Y1X815621J; SOLVAY T 200; SOLVAY T-200; INS NO.500(III); INS-500(III); DTXSID6049646

Frequently Asked Questions

What are the CAS number and molecular formula of Sodium sesquicarbonate?

CAS 533-96-0; molecular formula C2HNa3O6; molecular weight — g/mol.

What other names is Sodium sesquicarbonate known by?

SODIUM SESQUICARBONATE, Magadi soda, Snowflake crystals, 533-96-0, Urao, Trisodium hydrogendicarbonate.

What is the regulatory status of Sodium sesquicarbonate?

Documented regulatory listings: FDA Substance added to food: PH CONTROL AGENT; ACIDITY_REGULATOR: Food Additives; NOT SPECIFIED.

Is Sodium sesquicarbonate classified as hazardous?

6.8% of GHS notifications report no hazard classification (24 of 351).

What are the key physical properties of Sodium sesquicarbonate?

Density: 2.112.

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.