 
 
 Attachment  
Isobutylamine  
イソブチルアミン  
 
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  Isobutylamine  
Structural  formula  
 
 
 
Molecular formula   C4H11N 
Molecular weight   73.14  
Chemical name  [CAS number]   2-Methylpropan -1-amine   [78-81-9] 
Content   Isobutylamine contains not less than 95.0% of isobutylamine (C4H11N). 
Description   Isobutylamine occurs as a  colorless to yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of Isobutylamine  as directed in the 
Liquid Film Method under Infrared Spectrophotometry, and compare  it with the 
Reference Spectrum. Both spectra exhibit similar intensities of absorption at the 
same wavenumbers.  
Refractive index   nD20: 1.391–1.400  
Specific gravity   d2525: 0.724–0.737  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the  Flavor ing Substance s Tests . Use operating conditions (2)  
except for the column . Use a fused silica tube (0.25–0.53 mm in internal diameter and 30 –
60 m in length ) coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas 
chromatography.   
 Reference spectrum  
 
Isobutylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
 
 Isopropylamine  
イソプロピルアミン  
 
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  Isopropylamine  
Structural  formula  
 
 
 
Molecular formula   C3H9N 
Molecular weight   59.11  
Chemical name  [CAS number]   Propan -2-amine   [75-31-0] 
Content   Isopropylamine contains not less than 95.0% of  isopropylamine  (C3H9N). 
Description   Isoprop ylamine occurs as a  colorless to yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of Isopropylamine as directed in the 
Liquid Film Method under Infrared Spectrophotometry, and compare it with the 
Reference Spectrum. Both spectra exhibit similar intensities of absorption at the 
same wavenumbers.  
Refractive index   nD20: 1.367–1.378  
Specific gravity   d2525: 0.681–0.693  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) 
except for the column. Use a fused silica tube (0.25–0.53 mm in internal diameter and 30 –60 
m in length ) coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas 
chromatography.   
 Reference spectrum  
 
Isopropylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
 
 sec-Butylamine  
sec-ブチルアミン  
 
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  sec-Butylamine  
Structural  formula  
 
 
 
Molecular formula   C4H11N 
Molecular weight   73.14  
Chemical name  [CAS number]   Butan -2-amine   [13952 -84-6] 
Content   sec-Butylamine contains not less than 95.0% of sec-butylamine  (C4H11N). 
Description  sec-Butylamine occurs as a colorless to  yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of sec-Butylamine as directed in the 
Liquid Film Method under Infrared Spectrophotometry, and compare  it with the 
Reference Spec trum. Both spectra exhibit similar intensities of absorption at the 
same wavenumbers.  
Refractive index   nD20: 1.387–1.396  
Specific gravity   d2525: 0.715–0.724  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) 
except for the column. Use a fused silica tube (0.25–0.53 mm in internal diameter and 30 –60 
m in length ) coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas 
chromatography.   
 Reference spectrum  
 
sec-Butylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
 
 Propylamine  
プロピルアミン  
 
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  Propylamine  
Structural  formula  
 
 
 
Molecular formula   C3H9N 
Molecular weight   59.11  
Chemical name  [CAS number]   Propan -1-amine   [107-10-8] 
Content   Propylamine contains not less than 95.0% of  propylamine  (C3H9N). 
Description  Propylamine occurs as a colorless to  yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of Propylamine as directed in the Liquid 
Film Method under Infrared Spectrophotometry , and compare it with the Reference 
Spectrum. Both spectra exhibit similar intensities of absorption at the same 
wavenumbers.  
Refractive index   nD20: 1.384–1.392  
Specific gravity   d2525: 0.710–0.720  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) except for 
the column. Use a fused silica tube (0.25–0.53 mm in internal diameter  and 30–60 m in length ) 
coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas chromatography. 
 Reference spectrum  
 
Propylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
 
 Hexylamine  
ヘキシルアミン  
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  Hexylamine  
Structural  formula  
 
 
 
Molecular formula   C6H15N 
Molecular weight   101.19  
Chemical name  [CAS number]   Hexan -1-amine   [111-26-2] 
Content   Hexylamine contains not less than 95.0% of hexylamine  (C6H15N). 
Description  Hexylamine occurs as a colorless to  yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of Hexylamine as directed in the Liquid 
Film Method under Infrared Spectrophotometry , and compare it with the Reference 
Spectrum. Both spectra exhibit similar intensities of absorption at the same 
wavenumbers.  
Refractive index   nD20:1.415–1.421  
Specific gravity  d2525: 0.761–0.767  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) except for 
the column. Use a fused silica tube (0.25–0.53 mm in internal diameter and 30 –60 m in length ) 
coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas chromatography. 
 Reference spectrum  
 
Hexylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
 
 Pentylamine  
ペンチルアミン  
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  Pentylamine  
Structural  formula  
 
 
 
Molecular formula   C5H13N 
Molecular weight   87.16  
Chemical name  [CAS number]   Pentan -1-amine   [110-58-7] 
Content   Pentylamine contains not less than 95.0% of pentylamine  (C5H13N). 
Description  Pentylamine  occurs as a colorless to  yellow, clear liquid having a characteristic odor.  
Identification   Determine the infrared absorption spectrum of Pentylamine as directed in the Liquid 
Film Method under Infrared Spectrophotometry , and compare it with the Reference 
Spectrum. Both spectra exhibit similar intensities of absorption at the same 
wavenumbers.  
Refractive index   nD20: 1.408–1.424  
Specific gravity   d2525: 0.750–0.759  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay 
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) 
except for the column. Use a fused silica tube (0.25–0.53 mm in internal diameter  and 30–60 
m in length ) coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas 
chromatography.   
 Reference spectrum  
 
Pentylamine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T  50  
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
 
 2-Methylbutylamine  
2-メチルブチルアミン  
 
Standard for use  
 
Only for flavoring  
 
Compositional specifications  
 
Substance name  2-Methylbutylamine  
Structural  formula  
 
 
 
Molecular formula   C5H13N 
Molecular weight   87.16  
Chemical name  [CAS number]   2-Methylbutan -1-amine   [96-15-1] 
Content   2-Methylbutylamine contains not  less than 95.0% of 2 -methylbutylamine  (C5H13N). 
Description  2-Methylbutylamine occurs as a colorless to  yellow, clear liquid having a characteristic 
odor.  
Identification   Determine the infrared absorption spectrum of 2 -Methylbutylamine as directed in the 
Liquid Film Method under Infrared Spectrophotometry, and compare it with the 
Reference Spectrum. Both spectra exhibit similar intensities of absorption at the 
same wavenumbers.  
Refractive index   nD20: 1.408–1.423  
Specific gravity   d2525: 0.752–0.779  
Assay   Proceed as directed in the Peak Area Percentage Method in the Gas Chromatographic Assay  
of Flavoring Agents under the Flavoring Substances Tests. Use operating conditions (2) 
except for the column. Use a fused si lica tube (0.25–0.53 mm in internal diameter and 30 –60 
m in length ) coated with a 0.25 –1 m thick layer of dimethylpolysiloxane  for gas 
chromatography.   
 Reference spectrum  
 
2-Methylbutylamine  
 
 
105 
 
 
 
 
 
75 
 
 
 
 
%T 50 
 
 
 
 
25 
 
 
 
 
0 
4000   
3000   
2000   
1500  
Wavenumber [cm-1]  
1000   
600 
