Microcrystalline waxes are elastic and often "sticky" or "tacky". This is because of the high proportion of multi-branched hydrocarbon chains (iso-paraffins) as opposed to straight-branched chains (normals).
While normal paraffins form large crystals, iso-normal paraffins form micro-crystals. These small crystals give an amorphous structure to the product making our Indramic products very flexible in contrast to the brittle nature of normal paraffins.
When testing to determine whether a wax is a "micro" or not, the crucual parameters are 1) molecular weight and 2) the iso-paraffin/normal paraffin ratio. Molecular weights of Indramic products range from approximately 580 to 700; this implies an average carbon number of 41 to 50.
IRM microcrystalline waxes are moisture free and range in color from a white to a brown, depending on the degree of refinement. Microcrystalline waxes dissolve similar to paraffin waxes: in chloroform, ether, benzene, carbon disulfide, volatile oils and other fixed oils. Micros do not dissolve in water/alcohol mixtures and dissolve only slightly in absolute alcohol. Indramic products are ductile and flexible, even at relatively low temperatures; they possess high tensile strength.
Micros are highly cohesive; this gives them adhesive properties and makes them resist both water vapor and liquid water.
- Chemically Inert (odorless, tasteless)
- High Melting Point (relative to paraffin)
- High Viscosity
- High Cohesion and Adhesion
Uses for Microcrystalline Wax
- Base for chewing gum, lipstick, cold creams, and ointments (where they harden, lubricate, carry additives, and protect against moisture)
- Food packaging, moisture proffing, film, foil, and corrugated board
- Increasing the fluidity and the flexible bonding of hot-melt adhesives
- Crayons, candles and caulk to sealants and fine polishes
- Host for compounds that prevent rust
- Insulating materials
- Candle Additives (where they "bind" excessive oil or fragrances)
|IRM Microcrystalline wax||Congealing Point (°C)
|Congealing Point (°F)||Drop Point(°C)
|Drop Point (°F)||Viscosity, cSt
|Color, ASTM D-1500 (A)or
|Indramic 283-H||70 - 75||158-167||73 - 78||163.4-172.4||14.0 max||12 - 21||1.5 max(A)|
|Indramic 7883||75-80||167-176||78-84||172.4-183.2||14.0 min||22 max||2.5 max(A)|
|Indramic 72-SU||69-75.5||156.2-167.9||76-80.5||168.8-176.9||14-17||20-30||4.5 max(A)|
|Indramic 70-D||-||65-77||149-170.6||7-15||100 max||2.5 max(A)|
|Indramic 78-D||-||76.5-85||169.7-185||15-23||100 max||2.0 max(A)|
|Indramic 77-S||70-80||158-176||73-84||163.4-183.2||13-16||20-30||+20 min(S)|
|Indramic 190-S||-||77.2-93.3||170.96-199.94||9-21||6 min||-|
|Indramic 2945||-||76.5-85||169.7-185||14-20.5||35-70||+16 min(S)|
|Indramic 7080-B||-||76.5-88||169.7-190.4||15 max||+15 min(S)|
Microcrystalline Waxes Safety Data Sheet