I recently acquired an 8lb jug of H4350 in a trade. But it’s an odd shape and I’m wondering if it’s old stock. I’m just curious about what it is exactly. It’s more of a bleach bottle shape. It was still sealed in the box, the jug being sealed also. It’s a different color than all of my other H4350. It’s silver/gray like a pencil lead whereas my other H4350 has a slight greenish tint to it.