Formaldehído solution

Molecular Biology

100

1.03 (vs air)

52 mmHg ( 37 °C)

BioReagent

liquid

572 °F

~10% methanol as stabilizer

≥36.0% in H₂O (T), 36.0-38.0% (aldehyde method)

electrophoresis: suitable

≤0.03% free acid (as HCOOH)

≤0.05% (as SO₄)

2.8-4.0

1.09 g/mL at 20 °C, 1.09 g/mL at 25 °C (lit.)

chloride (Cl^-): ≤10 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg

Ca: ≤5 mg/kg, Cd: ≤1 mg/kg, Co: ≤1 mg/kg, Cr: ≤1 mg/kg, Cu: ≤1 mg/kg, Fe: ≤1 mg/kg, K: ≤20 mg/kg, Mg: ≤1 mg/kg, Mn: ≤1 mg/kg, Na: ≤100 mg/kg, Ni: ≤1 mg/kg, Pb: ≤1 mg/kg, Zn: ≤1 mg/mL

2 M in H₂O

λ: 260 nm A_max: 0.01, λ: 280 nm A_max: 0.01

in accordance for electrophoresis of RNA in agarose gels

room temp

[H]C([H])=O

1S/CH2O/c1-2/h1H2

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