Tin tetrachloride

Hydrolysis

Administrative data

Endpoint:

hydrolysis

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

21.01.-26-02.2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Parameters determined according EC test guideline according GLP guidelines

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)

Deviations:

yes

Remarks:

Due to the physical-chemical properties of the test item it is impossible to investigate its hydrolytic propertiesaccording to the EU Commision Regulation (EC) No. 440/2008C.7. According to literature, in auqeous solution stannic chloride is cleaved by hy

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Tin tetrachloride

EC Number:

231-588-9

EC Name:

Tin tetrachloride

Cas Number:

7646-78-8

Molecular formula:

Cl4Sn

IUPAC Name:

tin tetrachloride

Details on test material:

Batch No.: 16.02.2009
Purity: 99.9 %

Radiolabelling:

no

Results and discussion

Preliminary study:

Because of the difficult handling and high instability of the test item the performance of the hydrolysis test described in the European Commission Regulation (EC)440/2008 C.7 and in the OECD guideline 111 was modified. Nevertheless the observation made during the performance of the test and the calculations showed that in distilled water 90 -96 % of the test item was hydrolized after a time period of 2.5 h. Therefore the tested substance has to be considered as hydrolytically unstable and according to the guidelines no additional testing is required.

Test performance:

No additional testing required.

Transformation products:

yes

Identity of transformation products

Identity of transformation products 1

No.:

#1

Reference

Reference substance name:

Unnamed

IUPAC name:

Hydrogen chloride

Inventory number:

InventoryMultipleMappingImpl [inventoryEntryValue=EC 231-595-7]

CAS number:

7647-01-0

Identity:

Other names: Hydrochloric Acid; Aqueous hydrochloric acid; Anhydrous hydrochloric acid; Basilin; Chlorohydric acid; Hydrochloric acid gas; Hydrochloride; Muriatic acid; Salzsaeure; HCl; Hydrochloric acid, anhydrous; Hydrogen-chloride-anhydrous-; Acide chlorhydrique; Acido cloridrico; Chloorwaterstof; Chlorowodor; Chlorwasserstoff; NA 1789; Spirits of salt; UN 1050; UN 1789; UN 2186; Anhydrous hydrogen chloride; Hydrogen chloride (acid); Marine acid; Soldering acid; Spirit of salt; Spirits of salts

Molecular formula:

Cl H

Molecular weight:

36.461

SMILES notation:

Cl

InChl:

=1S/ClH/h1H

Identity of transformation products 2

No.:

#2

Reference

Reference substance name:

Unnamed

IUPAC name:

18282-10-5 (tin oxide)

Identifier:

CAS number

Identity:

18282-10-5 (tin oxide)

Details on hydrolysis and appearance of transformation product(s):

2 test solutions were prepared with 100 ml of distilled water and app. 0.25 g of test item. The pH value if the water before the addition of the test item was 5.6. During the addition of stannic tetrachloride a reaction accompanied with the formation of fog could be observed and the test solution bubbled. For the time period of 2.5 h the pH value and the temperature of the test solutions were recorded. Immediately after the additon of the test item both solution reacheda pH-value of 1.6. This indicates a fast hydrolysis reaction of the test item with water at room temperature. As the pH remained constant for 2.5 h, it could be assumed that there is no further reaction. For the determination of the amount of hydrolysis product hydrochlorid acid the solutions were titrated with NaOH subsequently.

Dissipation DT50 of parent compound

Remarks on result:

other: Because of the difficult handling and high instability of the test item the performance of the hydrolysis test described in the European Commission Regulation (EC)440/2008 C.7 and in the OECD guideline 111 was modified.

Remarks:

Nevertheless the observation made during the performance of the test and the calculations showed that in distilled water 90-96 % of the test item was hydrolized after a time period of 2.5 h. Therefore the tested substance has to be considered as hydrolytically unstable and according to the guidelines no additional testing is required.