BASF's Sicotrans K2915 iron oxide red inorganic pigment has a chemical structure of iron trioxide.
Color index number: Pigment Red 101 is transparent in appearance, physical properties: density: 5.1 g/cm³, bulk density: 0.5 g/cm³, pH index: 6–8, conductivity: >50 μS/cm
Surface area: 30 m²/g, fastness performance: thermal stability: 320 °C, lightfastness: 8, weather resistance: 5, migration fastness: 5.
BASF Sicotrans Red K2915 is a bright translucent reddish-brown iron oxide inorganic pigment with high color intensity, excellent durability even at low concentrations, no warping in HDPE injection molding, good heat resistance in polyolefins, styrene and most engineering plastics, suitable for most indoor and outdoor applications, is the preferred pigment for reddish-brown fiber processing and coloring, especially recommended for PP, Application of PA6 nylon and PES polyester fiber.
Scope of application of polymers:
BASF SeriQ2915 recommended applications: LL/LDPE (low density polyethylene), HDPE (high density polyethylene), PP (polypropylene), PP fibers (PP fiber), PA6 (nylon), PA6 fibers (nylon fiber), PET (polyester resin), PES fibers (polyethersulfone resin fiber), PC (polycarbonate), PMMA (polymethyl methacrylate), PS (polystyrene), APPLICATIONS (Impact Resistant Polystyrene Engineering Plastics), ABS (Acrylonitrile-Butadiene-Styrene Copolymer/Resin), SAN (Styrene Acrylonitrile), Rubber (Rubber), PUR (Polyurethane) and other polymers.

Basf Pigments other models are classified
BASF Blue Pigments: K7090, K6902, K6907, K6911, K7104LW, K7097 (4GNP Blue), K7096 (GBP Blue), L6700F, L6905F, L6989F, L7087, L7085, L7101F, L6480, D7079, D7110F (GLVO Blue), D7088 (GLO Blue)
BASF Red Pigments: K4170FP (2BP Red), K2915, K3840SQ (1030P Red), K4270FP (4BP Red), K4270 (8B Red), K4104 (2020 Red), K4060FP (2BSP Red), K3890 (BRN Red), K3800 (FP Red), K3540 (RN Red), K3911, K3693SQ (AK-7 Red), L3920, L3885, L3670HD、 L3630, L3550HD, L3080, L3580, 350FA (GR Red)
BASF Green Pigments: K8730, k9630, K9610, L8730, D8730
BASF Yellow Pigments: K1420 (WSR Yellow), K1310 (4GV Yellow), K0961, K0990FP (8GNP Yellow), K1210 (3G Yellow), K1841, K2060FP (3RLP Yellow), K1800 (K2270 Yellow), K1500 (GR Yellow), K2060 (3RLTN Yellow), K1750, L0960, L2140HD, L1061HD (2088 Yellow), L1084HD (2084 yellow), L2060
BASF Purple Pigment Model: K5700 (B Purple)
BASF orange pigment models: K2960 (GP orange), K2925 (F2G orange), K2890 (2G orange), L2990HD (RA orange), L2890HD
BASF brand/current DCC brand: Vanadium vanadate 2093, 2094, 2097, 14247, 2GTA, 2GTM, 2GLMA, 3GLM, 3RLM, 5RLM, RMX