19-norpregn-4-en-20-yn-3-one, 17-hydroxy-7-methyl, (7alpha, 17alpha-)

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Study period:

2018

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance contains chemical groups associated with explosive properties which include oxygen, but the calculated oxygen balance is less than - 200

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In a statement it was concluded that the substance has no explosive properties.
Although the structures of the main constituent and the major impurity (structural isomer of the main constituent) contain a C≡C group, its contribution is relatively small compared to the overall molecular structure of the test substance. The calculated oxygen balance of the main constituent and its isomer impurity (MF C21H28O2) is -276.5. Since the calculated oxygen balance is less than -200, and because the 2 structures account for ca. 99.7% of the substance, the substance is considered to pose no risk for explodability.

In accordance with UN Manual of Tests and Criteria: Appendix 6 "Screening procedures for substances which may have explosive properties", the acceptance procedure for Class 1 explosives does not need to be applied.

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Name:

7-Methyl Norethist. Sp

Type of composition:

legal entity composition of the substance

State / form:

solid: particulate/powder

Reference substance:

7-Methyl Norethist. Sp

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019