WHEATON 2015 Lab Catalog

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WHEATON 800.225.1437 (U.S. & Canada Only) | 856.825.1100 | 856.825.1368 (F) |
Table 3. Rubber Stopper Formulation Characteristics
All stopper formulation data presented above is general information. Specific laboratory results are available upon request. It is recommended that all stoppers be thoroughly tested by the customer for compatibility.
Typical Properties:
Base Polymer Bromobutyl Bromobutyl Bromobutyl Bromobutyl Chlorobutyl Chlorobutyl Chlorobutyl Chlorobutyl
Durometer (shore A ± 5) 39 46 47 50 45 46 50 55
Specific Gravity 1.19 1.35 1.26 1.35 1.24 1.32 1.3 1.38
Ash % 31 48 41 44.9 38.4 45.5 42.7 47.9
Typical Extraction Data, USP:
Distilled Water
pH Change - 0.3 - 0.12 0.0 + 0.22 - 0.2 - 0.37 - 0.23 - 0.3
Reducing Agents,mL, .01N I
2
0.0 0.0 0.01 0.04 0.0 0.0 0.0 0.0
Turbidity, NTU 0.01 0.7 0.03 1.4 1.0 0.4 0.05 1.0
Total Solids, mg/100mL 0.8 0.7 0.3 1.3 0.0 0.3 0.4 1.0
Zinc, ppm — — — 1.31 1.2 — 0.2 0.3
Lead, ppm — — — < 0.5 < 0.5 — < 0.5 < 0.5
Toxicity Data:
Acute Systemic Passes — — — Passes — Passes Passes
Intracutaneous Reactivity Passes — — — Passes — Passes Passes
Cytotoxicity Passes Passes Passes Passes Passes Passes Passes Passes
Gray Bromobutyl / 39
w/ Complete Safety Coat
Gray
Bromobutyl / 46
Gray
Bromobutyl / 47
Gray
Bromobutyl / 50
Gray
Chlorobutyl / 45
Gray
Chlorobutyl / 46
Gray
Chlorobutyl / 50
Gray
Chlorobutyl / 55
Typical Properties:
Base Polymer Chlor / Iso Blend Chlor / Iso Blend Halobutyl Natural Silicone FKM
Durometer (shore A ± 5) 40 50 60 40 55 55
Specific Gravity 1.15 1.46 1.43 1.25 1.14 1.87
Ash % 29.5 55.7 51.2 38.9 N/A N/A
Typical Extraction Data, USP:
Distilled Water
pH Change - 0.6 - 0.8 - 0.3 + 0.1 - 0.3 - 0.38
Reducing Agents,mL, .01N I
2
0.0 0.0 0.0 0.0 0.1 0.06
Turbidity, NTU 0.7 2.6 5.0 29.0 1.0 0.0
Total Solids, mg/100mL 0.0 0.0 0.5 1.4 0.0 0.4
Zinc, ppm 1.0 1.6 0.5 0.2 — 0.05
Lead, ppm 0.0 — 0.0 0.0 < 0.5 0.5
Toxicity Data:
Acute Systemic Passes Passes Passes Passes Passes —
Intracutaneous Reactivity Passes Passes Passes Passes Passes —
Cytotoxicity Passes Passes Passes — Passes Passes
Gray Chlorobutyl
Isoprene Blend / 40
Gray Chlorobutyl
Isoprene Blend / 50
Black
Halobutyl / 60
Red
Natural / 40
Natural
Silicone
Black
FKM / 55
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