Maximum acceptable surface temperatures.

  1. Law
  2. CFR 16
  3. Commercial Practices
  4. Consumer Product Safety Commission
  5. Federal Hazardous Substances Act Regulations
  6. Requirements for Electrically Operated Toys or Other Electrically Operated Articles Intended for Use by Children
  7. Regulations
  8. Maximum acceptable surface temperatures.

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§ 1505.7 Maximum acceptable surface temperatures.

The maximum acceptable surface temperatures for electrically operated toys shall be as follows:

Expand Table
Surface type (as described - in § 1505.6 (g)(2)) Thermal inertia type1 Temperatures
°C. °F.
A 1 50 122
A 2 55 131
A 3 60 140
B 1 55 131
B 2 65 149
B 3 75 167
C (unmarked) 1 65 149
C (unmarked) 2 75 167
C (unmarked) 3 85 185
C (unmarked) 4 95 203
C marked 1 70 158
C marked 2 90 194
C marked 3 110 230
C marked 4 130 266
D (unmarked) 1 55 131
D (unmarked) 2 70 158
D (unmarked) 3 80 176
D (unmarked) 4 90 194
D marked 1 60 140
D marked 2 75 167
D marked 3 100 212
D marked 4 125 257
E (2) (3) (3)

1 Thermal inertia types are defined in terms of lambda as follows:

Type 1: Greater than 0.0045 (e.g., most metals).

Type 2: More than 0.0005 but not more than 0.0045 (e.g., glass).

Type 3: More than 0.0001 but not more than 0.0005 (e.g., most plastics).

Type 4: 0.0001 or less (e.g., future polymeric materials).

The thermal inertia of a material can be obtained by multiplying the thermal conductivity (cal./cm./sec./degrees C.) by the density (gm./cm.3) by the specific heat (cal./gm./degrees C.).

2 All types.

3 No limit.


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