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Proposals to Amend the New Zealand (Maximum Residue Limits of Agricultural Compounds) Food Standards 2008
16 Proposal to exempt Iron phosphate from an MRL
It is proposed that an MRL exemption is set for Iron phosphate when used as a molluscicide around food crops.
It is proposed that Schedule Two of the NZ (MRL) Food Standards 2008 be amended to include the following, this will be the resulting entry for iron phosphate in Schedule Two of the NZ (MRL) Food Standards 2008:
Compound |
CAS# |
Condition |
Iron phosphate |
10045-86-0 |
When used in pellet form as a molluscicide |
Amendment Rationale
The proposed MRL exemption represents a reassessment of the use pattern for Iron phosphate, the breakdown of this compound into trace elements means it is not suitable to be managed against a concentration limit, and therefore it can be exempted from the requirement of an MRL.
Chemical Information
Common name of compound |
Iron phosphate |
Use of compound |
Molluscicide |
Chemical Abstract Services (CAS) Registry number |
10045-86-0 |
Type of compound |
Metal salt |
Administration method |
Ground bait |
Good Agricultural Practice
Iron phosphate is applied in the form of a bait pellet to agricultural and horticultural land areas, as the pellets represent a very low risk use no specific good agricultural practice is required.
Residues Information
Iron phosphate pellets undergo environmental degradation and may release available Iron and phosphate in to soil, iron and phosphate however naturally occur in the soil and are absorbed into crops, levels in the crop are unlikely to exceed natural levels however.
Dietary Risk Assessment
Iron and phosphate are essential trace elements for humans; levels occurring in crops grown on treated areas are unlikely to exceed normal dietary levels.
Toxicological / Public Health Assessment
Given the natural occurrence of iron and phosphate in the diet it is considered that the proposed MRL exemption for iron phosphate represents no risk to public health.
Other International MRLs
Compound |
Food |
Maximum Residue Limit (mg/kg) |
Australia |
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Iron phosphate |
All foods |
Exempt |
To meet New Zealand’s obligations under the Agreement on the Application of Sanitary and Phytosanitary Measures the proposed MRL will be notified to the World Trade Organization. Any country may choose to comment if they believe the proposed MRL represents a barrier to their trade.
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