71687

Sodium hydroxide

BioUltra, suitable for luminescence, ≥98.0% (T), pellets

• Synonym(s): Caustic Lye, Caustic Soda, Soda Lye, Sodium Hydrate, Caustic soda
• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• NACRES: NA.32
• PubChem Substance ID: 57652336
• UNSPSC Code: 12352316
• EC Number: 215-185-5
• MDL number: MFCD00003548
• Assay: ≥98.0% (T)
• Concentration: 80-100 % (w/w) (sodium hydroxide)
• Form: pellets

Properties

• vapor density: >1 (vs air)
• Quality Segment: 100
• vapor pressure: <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
• product line: BioUltra
• assay: ≥98.0% (T)
• form: pellets
• mol wt: 40.00 g/mol
• concentration: 80-100 % (w/w) (sodium hydroxide)
• technique(s): cell culture | mammalian: suitable
• impurities: insoluble matter, passes filter test, ≤0.0003% total nitrogen (N), ≤0.0005% silicon dioxide (SiO₂), ≤1.0% sodium carbonate (Na₂CO₃)
• color: clear colorless
• pH: >14 (20 °C, 100 g/L)
• bp: 1,390 °C/1,013 hPa
• mp: 318 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• density: 2.13 g/cm³
• anion traces: chloride (Cl^-): ≤70 mg/kg, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg
• SMILES string: [OH-].[Na+]
• cation traces: Ag: ≤5 mg/kg, Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Hg: ≤0.1 mg/kg, K: ≤500 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.015, λ: 280 nm A_max: 0.01
• suitability: in accordance for luminescence, suitable for luminescence
• InChI: 1S/Na.H2O/h;1H2/q+1;/p-1
• InChI key: HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

General description

Sodium Hydroxide, also known as caustic soda or lye, is a white crystalline odorless solid which is corrosive and absorbs moisture from the air. When dissolved in water, Sodium Hydroxide generates heat to ignite combustible materials. In the form of pellets, Sodium Hydroxide, when dissolved, forms a colorless liquid, denser than water.

Application

Sodium Hydroxide is generally used in the solid or 50% solution form. It is suitable for use at various stages of soaps, paper, rayon, and petroleum product manufacturing. It is also used in carbohydrate research using FTIR analysis.[1] Sodium Hydroxide is used as a pre-treatment reagent to study enzymatic hydrolysis.[2]

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H314
• pcodes: P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges