Registration Dossier
Registration Dossier
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EC number: 295-619-8 | CAS number: 92113-15-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- α-Bitter acid, hop, hydrogenated, isomerized is a multi-component UVCB. The main components tetrahydroiso-alpha-acids are used in the food industry as an ingredient in beer (approved food additives for beer in the USA, under 21 CFR § 172.560). Since it is a UVCB, the precise composition can vary, but detailed compositional information is given in the boundary composition. Briefly, the major components are the tetrahydroiso-alpha acids, viz. tetrahydroisohumulone, tetrahydroisocohumulone and tetrahydroisoadhumulone, all present as the potassium salt. In addition there are hop polyphenols, waxes and resins, and entrained water. There is no volatile hop essential oil - this is removed in the manufacturing process. The hop essential oil is the only component of the starting material "hop extract" for which there is a predicted significant vapour pressure. Therefore, α-Bitter acid, hop, hydrogenated, isomerized will not contain volatile components, and the vapour pressure will be negligible. The vapour pressures of tetrahydroisohumulone has been estimated using EPISuite, and is used to provide a vapour pressure estimate for this substance.
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Estimation of vapour pressure by EPISuite
- Principles of method if other than guideline:
- The vapour pressures of tetrahydroisohumulone has been estimated using EPISuite, and is used to provide a vapour pressure estimate for this substance. Full details and justification are given in the attached company report.
Test material
- Reference substance name:
- α-Bitter acids, hop, hydrogenated, isomerized
- EC Number:
- 295-619-8
- EC Name:
- α-Bitter acids, hop, hydrogenated, isomerized
- Cas Number:
- 92113-15-0
- IUPAC Name:
- α-Bitter acids, hop, hydrogenated, isomerized
Constituent 1
- Specific details on test material used for the study:
- Batch no. EXP 6. Contains 75.81% w/w potassium salt of hop tetrahydroiso-alpha acids.
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 Pa
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure estimate is 9.5 x 10^-9 Pa.
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