What absorbs at 593 cm⁻¹ in an FTIR spectrum?

Quick answer

A band near 593 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.

Possible functional-group assignments

Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.

Possible materials

Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.

Spectrum logic

This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 593 cm⁻¹ is usually not enough for material identification by itself.

Real-world usage

This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.

Common mistakes

• Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
• Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
• Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.

Verification advice

When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.

Literature behind these assignments

• Metal oxygen confidence 1.0

  “cm-1 In order to confirm the formation of hexagonal ferrites region correspond to The various peaks ca 593 to 440 and to understand the nature of the residual carbon in the the Fe-O vibrational modes of BaM (Table 2).”

  Self-Combustion Synthesis of Co–Zr-doped Ba-Hexaferrite Nanoparticles and Their Studied Physicochemical and Magnetic Properties DOI: 10.1007/s10948-015-3204-5
• confidence 1.0

  “the characteristics peaks of Cr(III) 2p and Cr(III) 2p emerged at BE of 586.75 and 577.01 eV, 1/2 3/2 While, the peaks at BE of 592.98 and 579.82 eV are related to Cr(VI) 2p and Cr(VI) 2p 3/2, respectively.”

  Fabrication of attapulgite/magnetic aminated chitosan composite as efficient and reusable adsorbent for Cr (VI) ions DOI: 10.1038/s41598-021-96145-6
• Phosphate (PO4) confidence 1.0

  “Vibrations at 582 cm-1, 593 cm-1, and 606 cm-1 are attributed to PO43υ4 vibrations (asymmetric O-P-O”

  Gavinho 等 - 2023 - An Eco-Friendly Process to Extract Hydroxyapatite DOI: 10.3390/jfb14050279
• confidence 1.0

  “The major components of the the band at 593 related to the (PO group in Čejka veins were essentially identical to that of the rainturquoise (Frost et al., 2006;”

  Liu 等 - 2020 - UNIQUE RAINDROP PATTERN OF TURQUOISE FROM HUBEI, C DOI: 10.5741/GEMS.56.3.380
• Silicon (Si) confidence 1.0

  “At 6 h, the is cm(cid:3)1 intensity of the bands at 593 and 717 increased, related to article Si-O-Al increases in and the four-coordinated AlO structure”

  Effects of graphene oxide on the geopolymerization mechanism determined by quenching the reaction at intermediate states DOI: 10.1039/c6ra26340b