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Electronic Code of Federal Regulations

e-CFR data is current as of May 26, 2020

Title 16Chapter IISubchapter CPart 1505Subpart A → §1505.7


Title 16: Commercial Practices
PART 1505—REQUIREMENTS FOR ELECTRICALLY OPERATED TOYS OR OTHER ELECTRICALLY OPERATED ARTICLES INTENDED FOR USE BY CHILDREN
Subpart A—Regulations


§1505.7   Maximum acceptable surface temperatures.

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

Surface type (as described—in §1505.6 (g)(2))Thermal inertia type1Temperatures
°C.°F.
A150122
A255131
A360140
B155131
B265149
B375167
C (unmarked)165149
C (unmarked)275167
C (unmarked)385185
C (unmarked)495203
C marked170158
C marked290194
C marked3110230
C marked4130266
D (unmarked)155131
D (unmarked)270158
D (unmarked)380176
D (unmarked)490194
D marked160140
D marked275167
D marked3100212
D marked4125257
E(2)      (3)      (3)

1Thermal 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.).

2All types.

3No limit.

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