Securoc® C10

Identification & Functionality

Chemical Name

Huntite,

Hydromagnesite,

Quartz (SiO2),

Stearic acid

CASE Ingredients Functions

Flame Retardant

Plastics & Elastomers Functions

Flame Retardant

Technologies

CASE Ingredients,

Plastics

Product Families

CASE Ingredients — Additives

Functional Additives

Plastics — Polymer Additives

Flame Retardants

Features & Benefits

Labeling Claims

Halogen-free

CASE Ingredients Features

Flame Resistance,

Smoke Suppressant

Materials Features

Excellent Smoke Resistance,

Flame Retardant

Features and Benefits

• The flame-retarding action is based mainly upon the endothermic decomposition of metal hydroxide (heat-sink effect) and simultaneous release of water vapor and CO2. This reaction starts at about 240°C. Securoc® C 10 is used in applications where processing temperatures exceed 200 oC, making ATH unsuitable. The main uses are in PVC and chloroprene wire & cable compounds and PVC/NBR foams.
• Development of Halogen Free Flame Retardant (HFFR) products is one of the on-going high priority areas of the industry. The application of mineral based flame-retardant fillers is one of the options to replace the traditional halogenated FR-products that are in the process of new regulatory measures from the authorities. Hot topics are the persistency of halogenated flame retardants in the environment and the formation of poly-halogenated toxic compounds during thermal degradation of certain halogenated flame-retardants.
• Securoc® C 10 products are utilized as effective and economical flame retardants and/or smoke suppressants. They are not classified as a dangerous substance (DSD and CLP) and do not contain Substances of Very High Concern (SVHC), including their decomposition products from fire.

Product Background

• Securoc C10 and Securoc D10 products are different blends of two minerals: Huntite and Hydromagnesite
• Huntite particles have a platy morphology and the particles are usually about 1 μm or less in diameter, much smaller than hydromagnesite particles. It has the following chemical formula and thermally decomposes between about 450°C and 750°C in two stages, releasing only carbon dioxide, leaving a solid residue of magnesium oxide and calcium oxide:  Mg₃Ca(CO₃)₄ → 3MgO + CaO + 4CO₂
• The solid residue is called “char” and is critical to obtain smoke suppression . Char coming from Huntite has better mechanical properties than char generated by the thermal decomposition of hydromagnesite (which only consists of MgO)
• Natural hydromagnesite particles have a “blocky” morphology and once processed the majority of the particles are usually between 1 and 10 μm in diameter depending on the processing. 
• It thermally decomposes between about 220°C and 550°C in two stages, initially releasing water then carbon dioxide, leaving a solid residue of magnesium oxide:  Mg₅(CO₃)₄(OH)₂·4H2O → 5MgO + 4CO₂ + 5H₂O

Applications & Uses

Markets

Electrical & Electronics

Applications

Electrical & Electronics — Wire & Cable

Building Wires & Power Cables,

Jacketing & Insulation

Compatible Polymers & Resins

Chloroprene Rubber (CR),

Polyvinyl Chloride (PVC)

Plastics & Elastomers End Uses

Cable Jacketing,

Wire Jacketing

Properties

Physical Form

Powder

Physical Properties

	Value	Units	Test Method / Conditions
Surface Area	11.0	m²/g	BET
Color (D65;10º, L*)	97.4	-	CIELAB Spectrophotometer
Color (D65;10º, a*)	0.0	-	CIELAB Spectrophotometer
Color (D65;10º, b*)	1.2	-	CIELAB Spectrophotometer
Moisture Content (at 105°C)	0.5	%	Moisture analyser
pH	10.0	-	ISO 787/9
Density	2.7	g/cm³	He pycnometer
Loose Apparent Density	0.4	g/cm³	Internal method
Hardness	2 - 3	-	Mohs’ scale
Refractive Index	1.61 – 1.64	-	-
Thermal Stability	approx. 240	°C	DSC

Particle Size Distribution

	Value	Units	Test Method / Conditions
Percentage Passing on Individual Sieve (45 μm)	0.01	%	Alpine air jet sieved
Particle Size (D10)	1.0	μm	-
Particle Size (D50)	4.0	μm	Laser diffraction Sympatec
Particle Size (D50)	0.6	μm	Sedigraph D 5000
Particle Size (D90)	10.0	μm	-
Particle Size (D97)	16.0	μm	-

Chemical Analysis

	Value	Units	Test Method / Conditions
Magnesium Oxide (MgO)	37.0	wt%	XRF
Calcium Oxide (CaO)	10.2	wt%	XRF
Silicon Dioxide	0.2	wt%	XRF
Ferric Oxide (Fe₂O₃)	0.015	wt%	XRF
Fatty acid	0.0	wt%	Titrimetric
Loss on Ignition (1000°C, 1 hour)	52.0	wt%	XRF

Regulatory & Compliance

Certifications & Compliance

REACH Exempt (Europe),

SVHC Compliant

Packaging & Availability

Country Availability

Canada,

USA

Regional Availability

• Canada
• USA