Poly(ethylene glycol), BioUltra, 4,000

Vapor Density: >1 (vs air)

Vapor Pressure: <0.01 mmHg ( 20 °C)

Product Line: BioUltra

Autoignition Temp.: 581 °F

Mol. Wt.: M_r 3500-4500

Impurities: insoluble matter:, passes filter test; ≤0.001% peroxides (as H₂O₂):

pH:5.5-7.0 (25 °C, 50 mg/mL in H₂O)

MP: 58-61°C

Solubility: H₂O: soluble50 mg/mL at 25 °C, clear, colorless

Anion Traces: chloride (Cl-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg

Cation Traces: 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, K: ≤200 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ: 50 mg/mL in H₂O

UV absorption : λ: 260 nm A_max: 0.07, λ: 280 nm A_max: 0.03