ROMIL-SpA™ Super Purity Acids and Reagents Specifications

ROMIL-SpA™ Super Purity Acids and Reagents
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  • Sulphuric Acid SpA

    H691
    500ml H691P
    1LT H691M
    2½LT H691L
    Dgr H:290-314
    P:280c-301+330+331-305+351+338-309+310
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    H2SO4 MW 98.07 d 1.84 CAS [7664-93-9]
    Assay 93-98%
    Colour <10 Hazen (APHA)
    Ba, Be, Bi, Dy, Er, Eu, Ga, Gd, Hf, Ho, La, Lu, Nd, Pb, Pr, Sc, Sm, Tb, Te, Th, Tm, U <0.1 ppb each
    Au, Cd, Ce, Co, Cr, Cs, Cu, In, Li, Mn, Mo, Nb, Ni, Pt, Rb, Rh, Sr, Tl, V, W, Y, Yb, Zr <0.5 ppb each
    Ag, Al, As, Ca, Fe, Ge, Hg, K, Mg, Na, Sb, Sn, Ti, Zn <1 ppb each
    Se <10 ppb
    Total P <0.05 ppm
    NO3 <0.2 ppm
    Cl <0.7 ppm
    Substances reducing permanganate <20 ppm
    Application: Environment Analysis (eg, using AAS, ICP-OES, ICP-MS), Trace Metal Analysis, Ion Chromatography, Voltammetry
    Elemental impurities specified at time of manufacture.
    Typical values, elemental impurities at time of manufacture (ppb):
    Ag<0.1Cu<0.1La<0.1Pt<0.5Ti<0.5
    Al<0.5Dy<0.1Li<0.1Rb<0.5Tl<0.5
    As<1Er<0.1Lu<0.1Rh<0.5Tm<0.1
    Au<0.1Eu<0.1Mg<0.5Sb<1U<0.1
    Ba<0.1Fe<0.5Mn<0.5Sc<0.1V<0.1
    Be<0.1Ga<0.1Mo<0.1Se<5W<0.5
    Bi<0.1Gd<0.1Na<0.5Sm<0.1Y<0.5
    Ca<0.5Ge<0.1Nb<0.5Sn<0.1Yb<0.5
    Cd<0.1Hf<0.1Nd<0.1Sr<0.1Zn<0.2
    Ce<0.5Hg<1Ni<0.1Ta<0.5Zr<0.1
    Co<0.1Ho<0.1Pb<0.1Tb<0.1
    Cr<0.1In<0.5Pd<0.5Te<0.1
    Cs<0.5K<0.5Pr<0.1Th<0.1
    500ml H691P
    1LT H691M
    2½LT H691L
    Dgr H:290-314
    P:280c-301+330+331-305+351+338-309+310

Analysis Method

Most elements are determined by high resolution ICP‑MS using sample preconcentration. The results are an average of three aliquots subsampled from three samples representative of the batch. The samples are slowly evaporated to dryness. The resulting residue is reconstituted in a small volume of 2% Nitric Acid / 2% Hydrogen Peroxide ROMIL‑UpA. Operations are conducted under Class 100 or better clean-room conditions. For volatile elements (eg, Hg), the acid samples are diluted then directly injected into the ICP‑MS. Values below 3 times the standard deviation of the blank are shown with '<', no blank value is subtracted.