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Zinc oxide (EC 215-222-5)

Substance description/characteristics

  1. Name and other identifiers of the substance:

The substance zinc oxide is a mono constituent substance (origin: inorganic)

The following public name is used: zinc oxide

Substance identity:
EC number: 215-222-5
EC name: zinc oxide
CAS number (EC inventory): 1314-13-2
IUPAC name: oxozinc
Annex I index number: 030-013-00-7
Molecular formula: OZn
Molecular weight range: 81.4084
  1. Composition of the substance
    1. Name: zinc oxide standard

Description: typical grade with low level impurities, hexagonal crystalline structure

Degree of purity: > 97.0 — < 100.0 % (w/w)

Constituents
Constituent Typical concentration Concentration range Remarks

zinc oxide

EC no.: 215-222-5

ca. 99.8 % (w/w) > 97.0 — < 100.0 % (w/w) hexagonale crystalline structure

 

Impurities
Impurities Typical concentration Concentration range Remarks

Carbonic acid, zinc salt, basic

EC no.: 257-467-0

< 0.1 % (w/w)  >= 0.0 — < 3.0 % (w/w)  
  1. Name: zinc oxide lower grade

Description: some impurities may trigger classification

Degree of purity: > 90.0 — < 99.7 % (w/w)

Constituents
Constituent Typical concentration Concentration range Remarks

zinc oxide

EC no.: 215-222-5

ca. 95.0 % (w/w) > 89.5 — < 99.7 % (w/w) hexagonal crystalline structure

 

Impurities
Impurities Typical concentration Concentration range Remarks

lead monoxide

EC no.: 215-267-0
>= 0.3 % (w/w) >= 0.3 — < 7.0% (w/w) Impurity is relevant for C&L of the substance.

Carbonic acid,zinc salt,basic

EC no.: 257-467-0

< 0.1 % (w/w)  >= 0.0 — < 3.0 % (w/w)  
  1. Zinc oxide nano

Description: zinc oxide in nano dimension with hexagonal crystalline structure (not manufactured by Lead Registrant)

Degree of purity: c.a 100% (w/w)

Constituents
Constituent Typical concentration Concentration range Remarks
Zinc oxide EC no: 215-222-5 c.a 100% (w/w) > 99.5% - < 100% (w/w)  

D. Zinc oxide nano surface treated with silanes for Cosmetic application

Description: zinc oxide in nano form treated with triethoxycaprylylsilane, dimethoxydiphenylsilanetriethoxycaprylylsilane cross-polymer, octyl triethoxy silane for cosmetic use. Further referred to as coated COS (not manufactured by Lead Registrant).

Degree of purity: >=96.0 — <= 100.0% (w/w)

Constituents

Constituent Typical concentration Concentration range Remarks
zinc oxide EC no: 215-222-5 >= 96.0% (w/w) >= 96.0 — <100.0% (w/w) hexagonal crystalline structure

 

Impurities

Impurity  Typical concentration Concentration range Remarks

triethoxyoctylsilane

EC no: 220-941-2

<=4.0% (w/w)

>=0.0 — <=4.0% (w/w)

Surface treating agent intentionally added as binding agent and emulsifier

E. Zinc oxide nano surface treated with silanes for Food Contact Material

Description: Referred therefater as "coated FCM" -(not manufactured by Lead Registrant)

Degree of purity: >=98.0— <=100.0%(w/w)

Constituents

Constituent Typical concentration Concentration range Remarks
Zinc oxide EC no: 215-222-5  ca.99.5% (w/w) >=98.0 — <100.0% (w/w) hexagonal crystalline structure

 

Impurities

Impurity Typical concentration Concentration range Remarks
3-trimethoxysilylpropylmethacrylate EC no:219-785-8 <=2.0% (w/w) >0.0— <=2.0%(w/w) Surface treating agent intentionally added as coupling agent

 

 

  1. Classification

Please download classification information from document at the bottom of the page. Zinc oxide was in annex I of the old DSD 67/538/EC legislation and has been taken over in the annex VI of CLP 1272/2008/EC. Classification for environment has been revised according to the new criteria of 2nd ATP of CLP. An additional entry for zinc oxide nano was added.
 

 

Source : http://www.reach-zinc.eu/zinc-substances/zinc-substances-/zinc-oxide-ec-2152225