偏硼酸钠

Description

Sodium metaborate · CAS 7775-19-1 · BNaO2. UNII Z6Q395A23R. Boiling Point: 1434 °C; Boiling Point: 1434 °C @760 [mm Hg]; Melting Point: 966 °C.

Identification

CAS Registry Number	7775-19-1
PubChem CID	145326
Molecular formula	BNaO2
IUPAC name	sodium oxido(oxo)borane
UNII (FDA)	Z6Q395A23R

Computed Descriptors

Molecular Weight	65.80
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	65.9889037
Monoisotopic Mass	65.9889037
Topological Polar Surface Area	40.1
Heavy Atom Count	4
Formal Charge	0
Complexity	13.5

Physical & Chemical Properties

Boiling Point	1434 °C
Boiling Point	1434 °C @760 [mm Hg]
Melting Point	966 °C
Solubility	In water, 2.0X10+5 mg/L at 20 °C
Solubility	36 g/100 g water at 35 °C
Density	2.46 g/cu cm
Density	2.36 @25 °C

Physical description & handling notes

• Dry Powder
• White solid; [Merck Index] Hydrate: Cream colored powder; [MSDSonline] Commercially available as octahydrate and tetrahydrate; [HSDB]
• White pieces or powder
• White hexagonal crystals
• ODORLESS
• Stable on storage.

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	0.2% (2 / 1044)

GHS Hazard Classification

GHS notification summary	0.2% (2 / 1044)
Reported hazard statements	H315 (10.3%), H319 (52.6%), H361 (68.5%)

Documented Uses

• Used in cleansers, detergents, adhesives, and photographic solutions; Also used as a fire retardant in sodium chlorate, a defoliant; a textile finishing agent, and a sequestrant; Tetrahydrate: Used as an insecticide, fungicide, nematocide, and herbicide (non-crop land, cotton production, and under asphalt); Workers in mining and processing are exposed; [HSDB]
• Working with Glues and Adhesives [Category: Other]
• Photographic Processing [Category: Other]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Component of cleansers; photographic applications (as hydrates); fire retardant in sodium chlorate; used as a defoliant
• Insecticide, fungicide, and nematocide for nonselective control of general vegetation on noncropped land; spot treatment of Johnsongrass in cotton; inhibition of emergence under asphalt. /Tetrahydrate/

Synonyms

SODIUM METABORATE; Borosoap; 7775-19-1; Kodalk; Boric acid (HBO2), sodium salt; Sodium borate (NaBO2); Sodium metaborate, anhydrous; Boric acid, monosodium salt; Monosodium metaborate; Z6Q395A23R; Boric acid (HBO2), sodium salt (1:1); DTXSID2034386; CHEBI:75227; RefChem:887672; DTXCID0014386; 231-891-6

Frequently Asked Questions

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

CAS 7775-19-1; molecular formula BNaO2; molecular weight — g/mol.

What other names is Sodium metaborate known by?

SODIUM METABORATE, Borosoap, 7775-19-1, Kodalk, Boric acid (HBO2), sodium salt, Sodium borate (NaBO2).

What is the regulatory status of Sodium metaborate?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Sodium metaborate classified as hazardous?

0.2% of GHS notifications report no hazard classification (2 of 1044).

What are the key physical properties of Sodium metaborate?

Boiling Point: 1434 °C; Boiling Point: 1434 °C @760 [mm Hg]; Melting Point: 966 °C; Solubility: In water, 2.0X10+5 mg/L at 20 °C.

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.