FTIRAnalysis Report - dassoXTR

Wood Technology and Wood Chemistry

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FTIRAnalysis Report

Client:ZHEJIANG XINHAIYE BAMBOO TECHNOLOGY CO, LTD.

Sample Receivedon: 07/26/2019

Sample Name: DassoCTECHSample State: Powder

(Obtained from test sample)

Manufacturer: Jiangxi Zhushang Bamboo Industry Co., LtdFujian Dasso Bamboo Technology Co., Ltd

Brand: DASSO

TestTechnique: Infrared Spectrum Analysis

Test Instrument: Bruker Alpha FourierTransform Infrared Spectrometer

Chemical compounds for comparison:

Compound l: Boricacid, CAS-No: 10043-35-3, EC-No: 233-139-2, Received from Applichem GmbH;

Compound 2: Diboron trioxide, CAS-No: 1303-86-2, EC-No: 215-125-8, Received from Alfa Aesar;

Compound 3: Tetraboron disodium heptaoxide, hydrate, CAS-No: 12267-73-1, EC-No: 235-541-3,

Received from MerckGroup;

Compound 4: Disodium tetraborate anhydrous, CAS-No: 1330-43-4, EC-No: 215-540-4, Received

from Merck Group;

Compound 5: Sodium perborate, CAS-No: 10332-33-9, EC-No: 231-556-4, Received from Sigma-

Aldrich;

Compound 6: Lead bis(tetrafluoroborate), CAS-No: 13814-96- 5, EC-No: 237-486-0, Received from

Sigma-Aldrich;

Compound 7: Disodium octaborate tetrahydrate, CAS-No: 12008-41-2, EC-No: 234- 541-0, As-prepared

according to the Patent: CN104477930A;

Page l of11 August 2, 2019

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Results

FTIR analysis was used to confirm whether the tested sample contains boron-based chemical

compounds or not. Figure l shows the FTIR spectra oftested samples (DassoCTECH-1 from the inner

part and DassoCTECH-2 from the surface part). Since the FTIR spectra of DassoCTECH-1 and

DassoCTECH-2 are the same, the spectrum of DassoCTECH-1 was used to compare with other chemical

compounds. Figure 2 displays the comparison of FTIR spectra of DassoCTECH-1 and boric acid (CAS#

10043-35-3). Figure 3 displays the comparison of FTIR spectra of DassoCTECH-1 and diboron trioxide

(CAS#1303-86-2). Figure 4 displays the comparison of FTIR spectra of DassoCTECH-1 and tetraboron

disodium heptaoxide, hydrate (CAS#12267-73-1). Figure 5 displaysthe comparison of FTIR spectra of

DassoCTECH-1 and disodium tetraborate anhydrous (CAS#1330-43-4). Figure 6 displays the comparison

of FTIR spectra of DassoCTECH-1 and sodium perborate (CAS#10332-33-9). Figure 7 displays the

comparison of FTIR spectra of DassoCTECH-1 and Lead bis(tetrafluoroborate) (CAS#13814-96- 5).

Figure 8 displays the comparison of FTIR spectra of DassoCTECH-1 and disodium octaborate

(CAS#12008-41-2).

On the basis of these comparisons, a conclusion is confirmed äs follows:

FTIR spectrum oftested sample DassoCTECH doesn't displaythe characteristic peaks of boric

|acid, diboron trioxide, sodium tetraborate heptahydrate, disodium tetraborate anhydrous, sodium

perborate, Lead bis(tetrafluoroborate), and disodium octaborate.

Inspector: Hua Zhang Facility: Wood Technology and Wood Chemistry,Georg-August-University of Göttingen

Büsgenweg 4, 37077 Göttingen, Germany

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Page 2 of11 August 2, 2019

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DassoCTECH-1 DassoCTECH-2

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2500 2000 1500 1000

Wavenumber cm-1

500

DassoCTECH-1 and DassoCTECH-2 were obtained from the inner and the surface part of the sample received from ZHEJIANG XINHAIYE

BAMBOO TECHNOLOGY CO., LTD. As seen, the FTIR spectra of these two samples are totally the same without any external peaks appeared.

Page 4 of 11 August 2, 2019

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0. 06

Ü) DassoCTECH

0.0

4000 3500 3000 2500 2000 1500

Wavenumber cm-1

1000 500

Comments:

The characteristic peaks of boric acid (CAS# 10043-35-3) can't be observed in the spectrum of DassoCTECH-1, which indicates that the

DassoCTECH-1 sample doesn't contain boric acid.

Page 5 of 11 August 2, 2019

Wood Technology and Wood Chemistry

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DassoCTECH

Diboron trioxide

3500 3000 2500 2000 1500

Wavenumber cm-1

1000 500

Comments:

The characteristic peaks ofdiboron trioxide (CAS#1303-86-2) can't be observed in the spectrum of DassoCTECH-1, which indicates

that the DassoCTECH-1 sample doesn't contain diboron trioxide.

Page 6 of11 August 1, 2019

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Tetraboron disodium heptaoxide, hydrate

3500 3000 2500 2000 1500Wavenumbercm

-11000 500

Comments:

The characteristic peaks oftetraboron disodium heptaoxide, hydrate (CAS#12267-73-1) can't be observed in the spectrum of

DassoCTECH-1, which indicates that the DassoCTECH-1 sample doesn't contain tetraboron disodium heptaoxide, hydrate.

Page 7 of11 August 2, 2019

Wood Technology and Wood Chemistry

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DassoCTECH-1

Disodium Tetraborate anhydrous

3500 3000 2500 2000 1500

Wavenumber cm-1

1000 500

Comments:

The characteristic peaks ofdisodium tetraborate anhydrous (CAS#1330-43-4) can't be observed in the spectrum of DassoCTECH-1,

which indicates that the DassoCTECH-1 sample doesn't contain disodium tetraborate anhydrous.

Page 8 of 11 August 2, 2019

Wood Technology and Wood Chemistry

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Sodium perborate

3000 2500 2000 1500Wavenumber cm

-11000 500

Comments:

The characteristic peaks ofsodium perborate (CAS#10332-33-9) can't be observed in the spectrum of DassoCTECH-1, which indicates

that the DassoCTECH-1 sample doesn't contain sodium perborate.

Page 9 of 11 August 2, 2019

Wood Technology and Wood Chemistry

0. 06

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Lead bis(tetrafluoroborate)

Wavenumber cm-1

1026. 60

DassoCTECH

4000 3500 3000 2500 2000 1500 1000 500

Comments:

The characteristic peaks of lead bis(tetrafluoroborate) (CAS#13814-96-5) can't be observed in the spectrum of DassoCTECH-1, which

indicates that the DassoCTECH-1 sample doesn't contain lead bis(tetrafluoroborate).

Page 10 of 11 August 2, 2019

Wood Technology and Wood Chemistry

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Disodium octaborate

3500 3000 2500 2000 1500

Wavenumbercm-1

1000 500

Comments:

The characteristic peaks of disodium octaborate (CAS#12008-41-2) can't be observed in the spectrum of DassoCTECH-1, which

indicates that the DassoCTECH-1 sample doesn't contain disodium octaborate.

Page 11 of 11 August 2, 2019