FTIR ANALYSIS REPORT

Spectrum Analysis Result

No.: 20260305183949429695135 Date: 2026-03-05 18:42:01 Reported by: FTIR.fun Contact: [email protected]

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Historical stored result

Vinyl chloride/vinyl acetate copolymer

Historical stored result

#322 Initial rank 1 Current rank 1 Library lead match 75.4%

Key findings

Historical stored result loaded without the current FTIR reasoning contract. Direction/entity/aggregate evidence was not generated for this record.

Primary risk

Historical stored result loaded without the current FTIR reasoning contract. Direction/entity/aggregate evidence was not generated for this record.

Peak analysis

Detected peaks and interpretation

Rows marked with ★ are the characteristic peaks selected by the LLM analyzer.

Index	Characteristic	Wavenumber	Absorbance	Sources	One-line interpretation	KG citation	LLM confidence
1	·	671	0.85	-	671 cm-1: possible source: Refer to AI conclusion.	-	-
2	·	1209	0.47	-	1209 cm-1: possible source: Refer to AI conclusion.	-	-
3	·	1597	0.36	-	1597 cm-1: possible source: Refer to AI conclusion.	-	-
4	·	3362	0.25	-	3362 cm-1: possible source: Refer to AI conclusion.	-	-
5	·	3344	0.25	-	3344 cm-1: possible source: Refer to AI conclusion.	-	-
6	·	3332	0.25	-	3332 cm-1: possible source: Refer to AI conclusion.	-	-
7	·	2938	0.23	-	2938 cm-1: possible source: Refer to AI conclusion.	-	-
8	·	3609	0.20	-	3609 cm-1: possible source: Refer to AI conclusion.	-	-
9	·	3733	0.17	-	3733 cm-1: possible source: Refer to AI conclusion.	-	-
10	·	2181	0.14	-	2181 cm-1: possible source: Refer to AI conclusion.	-	-
11	·	2257	0.14	-	2257 cm-1: possible source: Refer to AI conclusion.	-	-
12	·	2049	0.11	-	2049 cm-1: possible source: Refer to AI conclusion.	-	-
13	·	2160	0.11	-	2160 cm-1: possible source: Refer to AI conclusion.	-	-
14	·	2140	0.11	-	2140 cm-1: possible source: Refer to AI conclusion.	-	-
15	·	2020	0.11	-	2020 cm-1: possible source: Refer to AI conclusion.	-	-
16	·	2222	0.11	-	2222 cm-1: possible source: Refer to AI conclusion.	-	-
17	·	2198	0.10	-	2198 cm-1: possible source: Refer to AI conclusion.	-	-
18	·	2076	0.10	-	2076 cm-1: possible source: Refer to AI conclusion.	-	-
19	·	2093	0.10	-	2093 cm-1: possible source: Refer to AI conclusion.	-	-
20	·	2067	0.10	-	2067 cm-1: possible source: Refer to AI conclusion.	-	-

Show full reasoning, evidence, and recommendations Expand to read the conclusion evidence, reasoning chain, full risk list, recommendations, and mixture notes.

Evidence

Conclusion evidence

Only evidence already present in the current result contract is shown here.

Library lead candidate LIB

Vinyl chloride/vinyl acetate copolymer #322 | match 75.4%

Reasoning

Reasoning chain

This section explains how the current conclusion was reached from the available evidence.

Historical stored result loaded without the current FTIR reasoning contract. Direction/entity/aggregate evidence was not generated for this record.

Risk

Uncertainty and blockers

These items limit how far the current conclusion can be trusted or refined.

Historical stored result loaded without the current FTIR reasoning contract. Direction/entity/aggregate evidence was not generated for this record.

Recommendation

Recommended next steps

These are the next verification actions suggested by the current reasoning output.

Re-run this sample with the current FTIR reasoning chain if you need a current conclusion.

Appendix

Sample information and raw spectrum

The raw uploaded spectrum is retained here for audit and manual review.

Baseline correction method: Asymmetric Least Squares Smoothing

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing: