Sodium olivoyl glutamate

Surface tension

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

surface tension

Type of information:

read-across based on grouping of substances (category approach)

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Data are being assessed for the use in a category approach. Available information are being judged as reliable with restrictions since it was conducted by a modeled and measured data.

Remarks:

Data are being assessed for the use in a category approach. Available information are being judged as reliable with restrictions since it was conducted by a modeled and measured data.

Justification for type of information:

Important considerations for the read-across:

Sodium Olivoyl Glutamate (the target chemical) has similar physico-chemical properties as the others members:
- "Aliphatic acid category" (the source chemicals);
- "Amino acid alkyl amides category" (the source chemicals);
- Sodium oleoyl glutamate (the source chemicals);

Key points are that the members share:
- the same structural features
- similar metabolic pathways
- common levels and mode of human health related effects
- function.

Qualifier:

no guideline available

GLP compliance:

not specified

Specific details on test material used for the study:

not specified

Key result

Remarks on result:

other: See Conclusion

Remarks:

See table below

Surface Tension of Fatty Acids and Triglycerides (dynes·cm−1)
Temperature (°C)	Lauric (C12:0)	Myristic (C14:0)	Palmitic (C16:0)	Oleic (C18:1)	Tricaprylin	Tripalmitin
20				32.79	30.04
30				32.12	29.46
40				31.90	28.81
50				31.04	28.13
60	27.40			30.21	27.18
70	26.51	27.86	28.20	29.60	26.43	28.85
75	25.97	27.41	27.85			28.68
80	25.64	27.15	27.57	29.29	25.60	28.28
85	24.85	26.83	27.36			27.95
90		26.53	27.04	28.56	25.48	27.72
Data reported in the literature
20				32.5	25.68
40					24.44
60	27.3				23.19
70	26.6	27.4	28.2
80	25.8	26.6	27.5		21.95	23.85
90	24.8	25.6	26.7

Conclusions:

Surface tension as a function of temperature was measured for four fatty acids (lauric, myristic, palmitic, and oleic) and two triglycerides (tricaprylin and tripalmitin). These surface tension measurements were performed using a K12 vers. 3.1 (Krüss GmbH) tensiometer at temperatures from 20 (or the melting point of each substance) to 90°C. The constants for a van der Waals-type correlation as well as for a linear equation are presented. Both equations are quite accurate, presenting mean deviations not exceeding 0.570%. Such correlation constants are valuable in the design or evaluation of processing equipment, especially that involving gas–liquid contact such as distillation and stripping columns, deodorizers, reactors, and equipment for physical refining.

Executive summary:

Overall, considering available data on the category members the substance have a hight suface tension

Reference 2

Endpoint:

surface tension

Type of information:

read-across based on grouping of substances (category approach)

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Data are being assessed for the use in a category approach. Available information are being judged as reliable with restrictions since it was conducted by a modeled and measured data.

Remarks:

Data are being assessed for the use in a category approach. Available information are being judged as reliable with restrictions since it was conducted by a modeled and measured data.

Justification for type of information:

Important considerations for the read-across:

Sodium Olivoyl Glutamate (the target chemical) has similar physico-chemical properties as the others members:
- "Aliphatic acid category" (the source chemicals);
- "Amino acid alkyl amides category" (the source chemicals);
- Sodium oleoyl glutamate (the source chemicals);

Key points are that the members share:
- the same structural features
- similar metabolic pathways
- common levels and mode of human health related effects
- function.

Qualifier:

no guideline available

GLP compliance:

not specified

Specific details on test material used for the study:

not specified

Key result

Remarks on result:

other: See Conclusion

Remarks:

See table below

Conclusions:

Surface tension of amino acids based surfactants increases remarkably with increasing chain length of hydrocarbon. The surface tension value at the cmc for 2CnCys with shorter hydrocarbon chain length is lower than for the C8Cys, whereas this result is reversed for n=12 with longer chain length. The increase in chain length for gemini surfactant remarkably increases (gamma)cmc. It is noteworthy that the (gamma)cmc values of 2C8Cys and 2C10Cys are lower than those of amino acid-based cationic gemini surfactants (31mNm-1 for cystine derivative and 30–35mNm-1 for arginine derivative

Executive summary:

Overall, considering available data on the category members the substance have a hight suface tension

Additional information

Overall, considering available data on the category members the substance have a hight suface tension