Microcrystalline Waxes
Microcrystalline Waxes

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) (ASTM D-938) |
Congealing Point (°F) | Drop Point(°C)
(ASTM D-127) |
Drop Point (°F) | Viscosity, cSt
(ASTM D-445) |
Penetration,dmm
(ASTM D-1321) |
Color, ASTM D-1500 (A)or
Saybolt D-156(S) |
|
---|---|---|---|---|---|---|---|---|
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 91-G | - | 89-95.5 | 192.2-203.9 | 16.5 (20 typical) |
5-10 | +16 min(S) | ||
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