Monoperoxyphthalic acid magnesium salt hexahydrate

Also known as: MMPP, Magnesium monoperoxyphthalate hexahydrate, Magnesium bis(monoperoxyphthalate) hexahydrate, Magnesium bis(2-carboperoxybenzoate) hexahydrate, Bis(2-carboxybenzoyldioxy)magnesium hexahydrate

Monoperoxyphthalic acid magnesium salt hexahydrate (CAS 84665-66-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H22MgO16 and a molecular weight of 494.64100 g/mol. Key property: a melting point of 93 °C (dec.)(lit.). It is classified under GHS with signal word Warning and hazard statements H312 — Harmful in contact with skin, H315 — Causes skin irritation and H319 — Causes serious eye irritation. It is listed by 3 suppliers, 2 of which publish reference prices, from 0.96 to 1,000.00 CNY. Record last updated Nov 2, 2026.

CAS No.: 84665-66-7
Jingsj CID: J-1991511-7
Molecular Formula: C₁₆H₂₂MgO₁₆
Molecular Weight: 494.64100 g/mol
Category: Organic Acids
Last updated: 11/2/2026

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Supplier	Purity / Pack	Base Price	Unit Price	Origin
Kangwang Made to OrderPlatform-operated	99% 500g	¥480.00	$0.14 /gBest ¥0.96/g CNY	CN China MOQ 500g	View Supplier
Jingkang In Stock	80% 500g	¥550.00	$0.16 /g ¥1.10/g CNY	CN China MOQ 500g	Visit Website
Jingkang In Stock	80% 100g	¥135.00	$0.2 /g ¥1.35/g CNY	CN China MOQ 100g	Visit Website
Jingkang In Stock	80% 25g	¥35.00	$0.21 /g ¥1.40/g CNY	CN China MOQ 25g	Visit Website
Jingkang In Stock	80% 5g	¥32.00	$0.96 /g ¥6.40/g CNY	CN China MOQ 5g	Visit Website
Jingkang In Stock	80% 1g	¥24.00	$3.59 /g ¥24.00/g CNY	CN China MOQ 1g	Visit Website
Jingkang In Stock	80% 2.5kg	¥2,500.00	$149.64 /kg ¥1,000.00/kg CNY	CN China MOQ 2.5kg	Visit Website
Jingheng Materials Made to Order	80% 1g	-	-	CN China MOQ 1g	Visit Website
Jingheng Materials Made to Order	80% 5g	-	-	CN China MOQ 5g	Visit Website
Jingheng Materials Made to Order	80% 25g	-	-	CN China MOQ 25g	Visit Website
Jingheng Materials Made to Order	80% 100g	-	-	CN China MOQ 100g	Visit Website

Physicochemical Properties

Melting Point	93 °C (dec.)(lit.)
Exact Mass	386.012451
PSA	145.66000
LogP	1.87500
Storage Conditions	2-8°C

GHS Safety & Compliance

IrritantSignal word: Warning

H312 — Harmful in contact with skin
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Monoperoxyphthalic acid magnesium salt hexahydrate?

The CAS number of Monoperoxyphthalic acid magnesium salt hexahydrate is 84665-66-7.

What are the molecular formula and molecular weight of Monoperoxyphthalic acid magnesium salt hexahydrate?

Monoperoxyphthalic acid magnesium salt hexahydrate has molecular formula C16H22MgO16 and molecular weight 494.64100 g/mol.

Which suppliers offer Monoperoxyphthalic acid magnesium salt hexahydrate?

3 supplier(s) listed; reference unit price ¥0.96–1000.00 /g.

Is Monoperoxyphthalic acid magnesium salt hexahydrate hazardous?

Monoperoxyphthalic acid magnesium salt hexahydrate has GHS signal word Warning and hazard statements H312 — Harmful in contact with skin; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 11/2/2026

How to cite: Jingsj. "Monoperoxyphthalic acid magnesium salt hexahydrate (CAS 84665-66-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991511-7 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.